diff --git a/docs/images/remove/$address.png b/docs/images/remove/$address.png
deleted file mode 100644
index cf0434e0e83..00000000000
Binary files a/docs/images/remove/$address.png and /dev/null differ
diff --git a/docs/images/remove/$telegram.png b/docs/images/remove/$telegram.png
new file mode 100644
index 00000000000..04e5994cc02
Binary files /dev/null and b/docs/images/remove/$telegram.png differ
diff --git a/docs/tutorials/RemovingFields.md b/docs/tutorials/RemovingFields.md
index f29169bc924..cba33549fdd 100644
--- a/docs/tutorials/RemovingFields.md
+++ b/docs/tutorials/RemovingFields.md
@@ -8,11 +8,11 @@ title: "Tutorial: Removing Fields"
 > —  Antoine de Saint-Exupery
 
 When working on an existing code base, you will most likely find that some features that are no longer necessary.
-This tutorial aims to give you some practice on such a code 'removal' activity by removing the `address` field from `Person` class.
+This tutorial aims to give you some practice on such a code 'removal' activity by removing the `telegram` field from `Person` class.
 
 <div markdown="span" class="alert alert-success">
 
-**If you have done the [Add `remark` command tutorial](AddRemark.html)  already**, you should know where the code had to be updated to add the field `remark`. From that experience, you can deduce where the code needs to be changed to _remove_ that field too. The removing of the `address` field can be done similarly.
+**If you have done the [Add `remark` command tutorial](AddRemark.html)  already**, you should know where the code had to be updated to add the field `remark`. From that experience, you can deduce where the code needs to be changed to _remove_ that field too. The removing of the `telegram` field can be done similarly.
 <br>
 <br>
 However, if you have no such prior knowledge, removing a field can take a quite a bit of detective work. This tutorial takes you through that process. **At least have a read even if you don't actually do the steps yourself.**
@@ -28,7 +28,7 @@ IntelliJ IDEA provides a refactoring tool that can identify *most* parts of a re
 
 ### Assisted refactoring
 
-The `address` field in `Person` is actually an instance of the `seedu.address.model.person.Address` class. Since removing the `Address` class will break the application, we start by identifying `Address`'s usages. This allows us to see code that depends on `Address` to function properly and edit them on a case-by-case basis. Right-click the `Address` class and select `Refactor` \> `Safe Delete` through the menu.
+The `telegram` field in `Person` is actually an instance of the `seedu.address.model.person.Telegrams` class. Since removing the `Address` class will break the application, we start by identifying `Address`'s usages. This allows us to see code that depends on `Address` to function properly and edit them on a case-by-case basis. Right-click the `Address` class and select `Refactor` \> `Safe Delete` through the menu.
 * :bulb: To make things simpler, you can unselect the options `Search in comments and strings` and `Search for text occurrences`
 
 ![Usages detected](../images/remove/UnsafeDelete.png)
@@ -41,18 +41,18 @@ Remove usages of `Address` by performing `Safe Delete`s on each entry i.e., doub
 
 Let’s try removing references to `Address` in `EditPersonDescriptor`.
 
-1. Safe delete the field `address` in `EditPersonDescriptor`.
+1. Safe delete the field `telegram` in `EditPersonDescriptor`.
 
 1. Select `Yes` when prompted to remove getters and setters.
 
 1. Select `View Usages` again.<br>
    ![UnsafeDeleteOnField](../images/remove/UnsafeDeleteOnField.png)
 
-1. Remove the usages of `address` and select `Do refactor` when you are done.
+1. Remove the usages of `telegram` and select `Do refactor` when you are done.
 
    <div markdown="span" class="alert alert-primary">
 
-   :bulb: **Tip:** Removing usages may result in errors. Exercise discretion and fix them. For example, removing the `address` field from the `Person` class will require you to modify its constructor.
+   :bulb: **Tip:** Removing usages may result in errors. Exercise discretion and fix them. For example, removing the `telegram` field from the `Person` class will require you to modify its constructor.
    </div>
 
 1. Repeat the steps for the remaining usages of `Address`
@@ -61,11 +61,11 @@ After you are done, verify that the application still works by compiling and run
 
 ### Manual refactoring
 
-Unfortunately, there are usages of `Address` that IntelliJ IDEA cannot identify. You can find them by searching for instances of the word `address` in your code (`Edit` \> `Find` \> `Find in path`).
+Unfortunately, there are usages of `Address` that IntelliJ IDEA cannot identify. You can find them by searching for instances of the word `telegram` in your code (`Edit` \> `Find` \> `Find in path`).
 
-Places of interest to look out for would be resources used by the application. `main/resources` contains images and `fxml` files used by the application and `test/resources` contains test data. For example, there is a `$address` in each `PersonCard` that has not been removed nor identified.
+Places of interest to look out for would be resources used by the application. `main/resources` contains images and `fxml` files used by the application and `test/resources` contains test data. For example, there is a `$telegram` in each `PersonCard` that has not been removed nor identified.
 
-![$address](../images/remove/$address.png)
+![$telegram](../images/remove/$telegram.png)
 
 A quick look at the `PersonCard` class and its `fxml` file quickly reveals why it slipped past the automated refactoring.
 
@@ -74,7 +74,7 @@ A quick look at the `PersonCard` class and its `fxml` file quickly reveals why i
 ``` java
 ...
 @FXML
-private Label address;
+private Label telegram;
 ...
 ```
 
@@ -83,7 +83,7 @@ private Label address;
 ``` xml
 ...
 <Label fx:id="phone" styleClass="cell_small_label" text="\$phone" />
-<Label fx:id="address" styleClass="cell_small_label" text="\$address" />
+<Label fx:id="telegram" styleClass="cell_small_label" text="\$telegram" />
 <Label fx:id="email" styleClass="cell_small_label" text="\$email" />
 ...
 ```
@@ -94,7 +94,7 @@ After removing the `Label`, we can proceed to formally test our code. If everyth
 
 At this point, your application is working as intended and all your tests are passing. What’s left to do is to clean up references to `Address` in test data and documentation.
 
-In `src/test/data/`, data meant for testing purposes are stored. While keeping the `address` field in the json files does not cause the tests to fail, it is not good practice to let cruft from old features accumulate.
+In `src/test/data/`, data meant for testing purposes are stored. While keeping the `telegram` field in the json files does not cause the tests to fail, it is not good practice to let cruft from old features accumulate.
 
 **`invalidPersonAddressBook.json`:**
 
@@ -104,9 +104,9 @@ In `src/test/data/`, data meant for testing purposes are stored. While keeping t
     "name": "Person with invalid name field: Ha!ns Mu@ster",
     "phone": "9482424",
     "email": "hans@example.com",
-    "address": "4th street"
+    "telegram": "@haaaaans"
   } ]
 }
 ```
 
-You can go through each individual `json` file and manually remove the `address` field.
+You can go through each individual `json` file and manually remove the `telegram` field.
diff --git a/docs/tutorials/TracingCode.md b/docs/tutorials/TracingCode.md
index 4fb62a83ef6..674e3a3bb92 100644
--- a/docs/tutorials/TracingCode.md
+++ b/docs/tutorials/TracingCode.md
@@ -39,7 +39,7 @@ In our case, we would want to begin the tracing at the very point where the App
 
 <img src="../images/ArchitectureSequenceDiagram.png" width="550" />
 
-According to the sequence diagram you saw earlier (and repeated above for reference), the `UI` component yields control to the `Logic` component through a method named `execute`. Searching through the code base for an `execute()` method that belongs to the `Logic` component yields a promising candidate in `seedu.address.logic.Logic`.
+According to the sequence diagram you saw earlier (and repeated above for reference), the `UI` component yields control to the `Logic` component through a method named `execute`. Searching through the code base for an `execute()` method that belongs to the `Logic` component yields a promising candidate in `seedu.telegram.logic.Logic`.
 
 <img src="../images/tracing/searchResultsForExecuteMethod.png" />
 
@@ -48,7 +48,7 @@ According to the sequence diagram you saw earlier (and repeated above for refere
 :bulb: **Intellij Tip:** The ['**Search Everywhere**' feature](https://www.jetbrains.com/help/idea/searching-everywhere.html) can be used here. In particular, the '**Find Symbol**' ('Symbol' here refers to methods, variables, classes etc.) variant of that feature is quite useful here as we are looking for a _method_ named `execute`, not simply the text `execute`.
 </div>
 
-A quick look at the `seedu.address.logic.Logic` (an extract given below) confirms that this indeed might be what we’re looking for.
+A quick look at the `seedu.telegram.logic.Logic` (an extract given below) confirms that this indeed might be what we’re looking for.
 
 ```java
 public interface Logic {
diff --git a/src/main/java/seedu/address/logic/commands/AddCommand.java b/src/main/java/seedu/address/logic/commands/AddCommand.java
index 71656d7c5c8..e8796815135 100644
--- a/src/main/java/seedu/address/logic/commands/AddCommand.java
+++ b/src/main/java/seedu/address/logic/commands/AddCommand.java
@@ -1,11 +1,11 @@
 package seedu.address.logic.commands;
 
 import static java.util.Objects.requireNonNull;
-import static seedu.address.logic.parser.CliSyntax.PREFIX_ADDRESS;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_EMAIL;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_NAME;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_PHONE;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_TAG;
+import static seedu.address.logic.parser.CliSyntax.PREFIX_TELEGRAM;
 
 import seedu.address.logic.commands.exceptions.CommandException;
 import seedu.address.model.Model;
@@ -23,13 +23,13 @@ public class AddCommand extends Command {
             + PREFIX_NAME + "NAME "
             + PREFIX_PHONE + "PHONE "
             + PREFIX_EMAIL + "EMAIL "
-            + PREFIX_ADDRESS + "ADDRESS "
+            + PREFIX_TELEGRAM + "TELEGRAM "
             + "[" + PREFIX_TAG + "TAG]...\n"
             + "Example: " + COMMAND_WORD + " "
             + PREFIX_NAME + "John Doe "
             + PREFIX_PHONE + "98765432 "
             + PREFIX_EMAIL + "johnd@example.com "
-            + PREFIX_ADDRESS + "311, Clementi Ave 2, #02-25 "
+            + PREFIX_TELEGRAM + "@johndoedoe "
             + PREFIX_TAG + "friends "
             + PREFIX_TAG + "owesMoney";
 
diff --git a/src/main/java/seedu/address/logic/commands/EditCommand.java b/src/main/java/seedu/address/logic/commands/EditCommand.java
index 7e36114902f..909caae66f9 100644
--- a/src/main/java/seedu/address/logic/commands/EditCommand.java
+++ b/src/main/java/seedu/address/logic/commands/EditCommand.java
@@ -1,11 +1,11 @@
 package seedu.address.logic.commands;
 
 import static java.util.Objects.requireNonNull;
-import static seedu.address.logic.parser.CliSyntax.PREFIX_ADDRESS;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_EMAIL;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_NAME;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_PHONE;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_TAG;
+import static seedu.address.logic.parser.CliSyntax.PREFIX_TELEGRAM;
 import static seedu.address.model.Model.PREDICATE_SHOW_ALL_PERSONS;
 
 import java.util.Collections;
@@ -19,11 +19,11 @@
 import seedu.address.commons.util.CollectionUtil;
 import seedu.address.logic.commands.exceptions.CommandException;
 import seedu.address.model.Model;
-import seedu.address.model.person.Address;
 import seedu.address.model.person.Email;
 import seedu.address.model.person.Name;
 import seedu.address.model.person.Person;
 import seedu.address.model.person.Phone;
+import seedu.address.model.person.Telegram;
 import seedu.address.model.tag.Tag;
 
 /**
@@ -40,7 +40,7 @@ public class EditCommand extends Command {
             + "[" + PREFIX_NAME + "NAME] "
             + "[" + PREFIX_PHONE + "PHONE] "
             + "[" + PREFIX_EMAIL + "EMAIL] "
-            + "[" + PREFIX_ADDRESS + "ADDRESS] "
+            + "[" + PREFIX_TELEGRAM + "TELEGRAM] "
             + "[" + PREFIX_TAG + "TAG]...\n"
             + "Example: " + COMMAND_WORD + " 1 "
             + PREFIX_PHONE + "91234567 "
@@ -65,6 +65,22 @@ public EditCommand(Index index, EditPersonDescriptor editPersonDescriptor) {
         this.editPersonDescriptor = new EditPersonDescriptor(editPersonDescriptor);
     }
 
+    /**
+     * Creates and returns a {@code Person} with the details of {@code personToEdit}
+     * edited with {@code editPersonDescriptor}.
+     */
+    private static Person createEditedPerson(Person personToEdit, EditPersonDescriptor editPersonDescriptor) {
+        assert personToEdit != null;
+
+        Name updatedName = editPersonDescriptor.getName().orElse(personToEdit.getName());
+        Phone updatedPhone = editPersonDescriptor.getPhone().orElse(personToEdit.getPhone());
+        Email updatedEmail = editPersonDescriptor.getEmail().orElse(personToEdit.getEmail());
+        Telegram updatedTelegram = editPersonDescriptor.getTelegram().orElse(personToEdit.getTelegram());
+        Set<Tag> updatedTags = editPersonDescriptor.getTags().orElse(personToEdit.getTags());
+
+        return new Person(updatedName, updatedPhone, updatedEmail, updatedTelegram, updatedTags);
+    }
+
     @Override
     public CommandResult execute(Model model) throws CommandException {
         requireNonNull(model);
@@ -86,22 +102,6 @@ public CommandResult execute(Model model) throws CommandException {
         return new CommandResult(String.format(MESSAGE_EDIT_PERSON_SUCCESS, editedPerson));
     }
 
-    /**
-     * Creates and returns a {@code Person} with the details of {@code personToEdit}
-     * edited with {@code editPersonDescriptor}.
-     */
-    private static Person createEditedPerson(Person personToEdit, EditPersonDescriptor editPersonDescriptor) {
-        assert personToEdit != null;
-
-        Name updatedName = editPersonDescriptor.getName().orElse(personToEdit.getName());
-        Phone updatedPhone = editPersonDescriptor.getPhone().orElse(personToEdit.getPhone());
-        Email updatedEmail = editPersonDescriptor.getEmail().orElse(personToEdit.getEmail());
-        Address updatedAddress = editPersonDescriptor.getAddress().orElse(personToEdit.getAddress());
-        Set<Tag> updatedTags = editPersonDescriptor.getTags().orElse(personToEdit.getTags());
-
-        return new Person(updatedName, updatedPhone, updatedEmail, updatedAddress, updatedTags);
-    }
-
     @Override
     public boolean equals(Object other) {
         // short circuit if same object
@@ -128,7 +128,7 @@ public static class EditPersonDescriptor {
         private Name name;
         private Phone phone;
         private Email email;
-        private Address address;
+        private Telegram telegram;
         private Set<Tag> tags;
 
         public EditPersonDescriptor() {}
@@ -141,7 +141,7 @@ public EditPersonDescriptor(EditPersonDescriptor toCopy) {
             setName(toCopy.name);
             setPhone(toCopy.phone);
             setEmail(toCopy.email);
-            setAddress(toCopy.address);
+            setTelegram(toCopy.telegram);
             setTags(toCopy.tags);
         }
 
@@ -149,47 +149,39 @@ public EditPersonDescriptor(EditPersonDescriptor toCopy) {
          * Returns true if at least one field is edited.
          */
         public boolean isAnyFieldEdited() {
-            return CollectionUtil.isAnyNonNull(name, phone, email, address, tags);
-        }
-
-        public void setName(Name name) {
-            this.name = name;
+            return CollectionUtil.isAnyNonNull(name, phone, email, telegram, tags);
         }
 
         public Optional<Name> getName() {
             return Optional.ofNullable(name);
         }
 
-        public void setPhone(Phone phone) {
-            this.phone = phone;
+        public void setName(Name name) {
+            this.name = name;
         }
 
         public Optional<Phone> getPhone() {
             return Optional.ofNullable(phone);
         }
 
-        public void setEmail(Email email) {
-            this.email = email;
+        public void setPhone(Phone phone) {
+            this.phone = phone;
         }
 
         public Optional<Email> getEmail() {
             return Optional.ofNullable(email);
         }
 
-        public void setAddress(Address address) {
-            this.address = address;
+        public void setEmail(Email email) {
+            this.email = email;
         }
 
-        public Optional<Address> getAddress() {
-            return Optional.ofNullable(address);
+        public Optional<Telegram> getTelegram() {
+            return Optional.ofNullable(telegram);
         }
 
-        /**
-         * Sets {@code tags} to this object's {@code tags}.
-         * A defensive copy of {@code tags} is used internally.
-         */
-        public void setTags(Set<Tag> tags) {
-            this.tags = (tags != null) ? new HashSet<>(tags) : null;
+        public void setTelegram(Telegram telegram) {
+            this.telegram = telegram;
         }
 
         /**
@@ -201,6 +193,14 @@ public Optional<Set<Tag>> getTags() {
             return (tags != null) ? Optional.of(Collections.unmodifiableSet(tags)) : Optional.empty();
         }
 
+        /**
+         * Sets {@code tags} to this object's {@code tags}.
+         * A defensive copy of {@code tags} is used internally.
+         */
+        public void setTags(Set<Tag> tags) {
+            this.tags = (tags != null) ? new HashSet<>(tags) : null;
+        }
+
         @Override
         public boolean equals(Object other) {
             // short circuit if same object
@@ -219,7 +219,7 @@ public boolean equals(Object other) {
             return getName().equals(e.getName())
                     && getPhone().equals(e.getPhone())
                     && getEmail().equals(e.getEmail())
-                    && getAddress().equals(e.getAddress())
+                    && getTelegram().equals(e.getTelegram())
                     && getTags().equals(e.getTags());
         }
     }
diff --git a/src/main/java/seedu/address/logic/parser/AddCommandParser.java b/src/main/java/seedu/address/logic/parser/AddCommandParser.java
index 3b8bfa035e8..baa5ce82d3a 100644
--- a/src/main/java/seedu/address/logic/parser/AddCommandParser.java
+++ b/src/main/java/seedu/address/logic/parser/AddCommandParser.java
@@ -1,22 +1,22 @@
 package seedu.address.logic.parser;
 
 import static seedu.address.commons.core.Messages.MESSAGE_INVALID_COMMAND_FORMAT;
-import static seedu.address.logic.parser.CliSyntax.PREFIX_ADDRESS;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_EMAIL;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_NAME;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_PHONE;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_TAG;
+import static seedu.address.logic.parser.CliSyntax.PREFIX_TELEGRAM;
 
 import java.util.Set;
 import java.util.stream.Stream;
 
 import seedu.address.logic.commands.AddCommand;
 import seedu.address.logic.parser.exceptions.ParseException;
-import seedu.address.model.person.Address;
 import seedu.address.model.person.Email;
 import seedu.address.model.person.Name;
 import seedu.address.model.person.Person;
 import seedu.address.model.person.Phone;
+import seedu.address.model.person.Telegram;
 import seedu.address.model.tag.Tag;
 
 /**
@@ -31,9 +31,9 @@ public class AddCommandParser implements Parser<AddCommand> {
      */
     public AddCommand parse(String args) throws ParseException {
         ArgumentMultimap argMultimap =
-                ArgumentTokenizer.tokenize(args, PREFIX_NAME, PREFIX_PHONE, PREFIX_EMAIL, PREFIX_ADDRESS, PREFIX_TAG);
+                ArgumentTokenizer.tokenize(args, PREFIX_NAME, PREFIX_PHONE, PREFIX_EMAIL, PREFIX_TELEGRAM, PREFIX_TAG);
 
-        if (!arePrefixesPresent(argMultimap, PREFIX_NAME, PREFIX_ADDRESS, PREFIX_PHONE, PREFIX_EMAIL)
+        if (!arePrefixesPresent(argMultimap, PREFIX_NAME, PREFIX_TELEGRAM, PREFIX_PHONE, PREFIX_EMAIL)
                 || !argMultimap.getPreamble().isEmpty()) {
             throw new ParseException(String.format(MESSAGE_INVALID_COMMAND_FORMAT, AddCommand.MESSAGE_USAGE));
         }
@@ -41,10 +41,10 @@ public AddCommand parse(String args) throws ParseException {
         Name name = ParserUtil.parseName(argMultimap.getValue(PREFIX_NAME).get());
         Phone phone = ParserUtil.parsePhone(argMultimap.getValue(PREFIX_PHONE).get());
         Email email = ParserUtil.parseEmail(argMultimap.getValue(PREFIX_EMAIL).get());
-        Address address = ParserUtil.parseAddress(argMultimap.getValue(PREFIX_ADDRESS).get());
+        Telegram telegram = ParserUtil.parseTelegram(argMultimap.getValue(PREFIX_TELEGRAM).get());
         Set<Tag> tagList = ParserUtil.parseTags(argMultimap.getAllValues(PREFIX_TAG));
 
-        Person person = new Person(name, phone, email, address, tagList);
+        Person person = new Person(name, phone, email, telegram, tagList);
 
         return new AddCommand(person);
     }
diff --git a/src/main/java/seedu/address/logic/parser/CliSyntax.java b/src/main/java/seedu/address/logic/parser/CliSyntax.java
index 75b1a9bf119..714733b2f10 100644
--- a/src/main/java/seedu/address/logic/parser/CliSyntax.java
+++ b/src/main/java/seedu/address/logic/parser/CliSyntax.java
@@ -9,7 +9,7 @@ public class CliSyntax {
     public static final Prefix PREFIX_NAME = new Prefix("n/");
     public static final Prefix PREFIX_PHONE = new Prefix("p/");
     public static final Prefix PREFIX_EMAIL = new Prefix("e/");
-    public static final Prefix PREFIX_ADDRESS = new Prefix("a/");
-    public static final Prefix PREFIX_TAG = new Prefix("t/");
+    public static final Prefix PREFIX_TELEGRAM = new Prefix("t/");
+    public static final Prefix PREFIX_TAG = new Prefix("tag/");
 
 }
diff --git a/src/main/java/seedu/address/logic/parser/EditCommandParser.java b/src/main/java/seedu/address/logic/parser/EditCommandParser.java
index 845644b7dea..fc50a94f079 100644
--- a/src/main/java/seedu/address/logic/parser/EditCommandParser.java
+++ b/src/main/java/seedu/address/logic/parser/EditCommandParser.java
@@ -2,11 +2,11 @@
 
 import static java.util.Objects.requireNonNull;
 import static seedu.address.commons.core.Messages.MESSAGE_INVALID_COMMAND_FORMAT;
-import static seedu.address.logic.parser.CliSyntax.PREFIX_ADDRESS;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_EMAIL;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_NAME;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_PHONE;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_TAG;
+import static seedu.address.logic.parser.CliSyntax.PREFIX_TELEGRAM;
 
 import java.util.Collection;
 import java.util.Collections;
@@ -32,7 +32,7 @@ public class EditCommandParser implements Parser<EditCommand> {
     public EditCommand parse(String args) throws ParseException {
         requireNonNull(args);
         ArgumentMultimap argMultimap =
-                ArgumentTokenizer.tokenize(args, PREFIX_NAME, PREFIX_PHONE, PREFIX_EMAIL, PREFIX_ADDRESS, PREFIX_TAG);
+                ArgumentTokenizer.tokenize(args, PREFIX_NAME, PREFIX_PHONE, PREFIX_EMAIL, PREFIX_TELEGRAM, PREFIX_TAG);
 
         Index index;
 
@@ -52,8 +52,8 @@ public EditCommand parse(String args) throws ParseException {
         if (argMultimap.getValue(PREFIX_EMAIL).isPresent()) {
             editPersonDescriptor.setEmail(ParserUtil.parseEmail(argMultimap.getValue(PREFIX_EMAIL).get()));
         }
-        if (argMultimap.getValue(PREFIX_ADDRESS).isPresent()) {
-            editPersonDescriptor.setAddress(ParserUtil.parseAddress(argMultimap.getValue(PREFIX_ADDRESS).get()));
+        if (argMultimap.getValue(PREFIX_TELEGRAM).isPresent()) {
+            editPersonDescriptor.setTelegram(ParserUtil.parseTelegram(argMultimap.getValue(PREFIX_TELEGRAM).get()));
         }
         parseTagsForEdit(argMultimap.getAllValues(PREFIX_TAG)).ifPresent(editPersonDescriptor::setTags);
 
diff --git a/src/main/java/seedu/address/logic/parser/ParserUtil.java b/src/main/java/seedu/address/logic/parser/ParserUtil.java
index b117acb9c55..5a1fa54d36a 100644
--- a/src/main/java/seedu/address/logic/parser/ParserUtil.java
+++ b/src/main/java/seedu/address/logic/parser/ParserUtil.java
@@ -9,12 +9,13 @@
 import seedu.address.commons.core.index.Index;
 import seedu.address.commons.util.StringUtil;
 import seedu.address.logic.parser.exceptions.ParseException;
-import seedu.address.model.person.Address;
 import seedu.address.model.person.Email;
 import seedu.address.model.person.Name;
 import seedu.address.model.person.Phone;
+import seedu.address.model.person.Telegram;
 import seedu.address.model.tag.Tag;
 
+
 /**
  * Contains utility methods used for parsing strings in the various *Parser classes.
  */
@@ -66,18 +67,18 @@ public static Phone parsePhone(String phone) throws ParseException {
     }
 
     /**
-     * Parses a {@code String address} into an {@code Address}.
+     * Parses a {@code String address} into an {@code Telegram}.
      * Leading and trailing whitespaces will be trimmed.
      *
-     * @throws ParseException if the given {@code address} is invalid.
+     * @throws ParseException if the given {@code telegram} is invalid.
      */
-    public static Address parseAddress(String address) throws ParseException {
-        requireNonNull(address);
-        String trimmedAddress = address.trim();
-        if (!Address.isValidAddress(trimmedAddress)) {
-            throw new ParseException(Address.MESSAGE_CONSTRAINTS);
+    public static Telegram parseTelegram(String telegram) throws ParseException {
+        requireNonNull(telegram);
+        String trimmedTelegram = telegram.trim();
+        if (!Telegram.isValidTelegram(trimmedTelegram)) {
+            throw new ParseException(Telegram.MESSAGE_CONSTRAINTS);
         }
-        return new Address(trimmedAddress);
+        return new Telegram(trimmedTelegram);
     }
 
     /**
diff --git a/src/main/java/seedu/address/model/person/Person.java b/src/main/java/seedu/address/model/person/Person.java
index 8ff1d83fe89..b1e47fb1dc3 100644
--- a/src/main/java/seedu/address/model/person/Person.java
+++ b/src/main/java/seedu/address/model/person/Person.java
@@ -10,7 +10,7 @@
 import seedu.address.model.tag.Tag;
 
 /**
- * Represents a Person in the address book.
+ * Represents a Person in the telegram book.
  * Guarantees: details are present and not null, field values are validated, immutable.
  */
 public class Person {
@@ -21,18 +21,18 @@ public class Person {
     private final Email email;
 
     // Data fields
-    private final Address address;
+    private final Telegram telegram;
     private final Set<Tag> tags = new HashSet<>();
 
     /**
      * Every field must be present and not null.
      */
-    public Person(Name name, Phone phone, Email email, Address address, Set<Tag> tags) {
-        requireAllNonNull(name, phone, email, address, tags);
+    public Person(Name name, Phone phone, Email email, Telegram telegram, Set<Tag> tags) {
+        requireAllNonNull(name, phone, email, telegram, tags);
         this.name = name;
         this.phone = phone;
         this.email = email;
-        this.address = address;
+        this.telegram = telegram;
         this.tags.addAll(tags);
     }
 
@@ -48,8 +48,8 @@ public Email getEmail() {
         return email;
     }
 
-    public Address getAddress() {
-        return address;
+    public Telegram getTelegram() {
+        return telegram;
     }
 
     /**
@@ -91,14 +91,14 @@ public boolean equals(Object other) {
         return otherPerson.getName().equals(getName())
                 && otherPerson.getPhone().equals(getPhone())
                 && otherPerson.getEmail().equals(getEmail())
-                && otherPerson.getAddress().equals(getAddress())
+                && otherPerson.getTelegram().equals(getTelegram())
                 && otherPerson.getTags().equals(getTags());
     }
 
     @Override
     public int hashCode() {
         // use this method for custom fields hashing instead of implementing your own
-        return Objects.hash(name, phone, email, address, tags);
+        return Objects.hash(name, phone, email, telegram, tags);
     }
 
     @Override
@@ -109,8 +109,8 @@ public String toString() {
                 .append(getPhone())
                 .append("; Email: ")
                 .append(getEmail())
-                .append("; Address: ")
-                .append(getAddress());
+                .append("; Telegram: ")
+                .append(getTelegram());
 
         Set<Tag> tags = getTags();
         if (!tags.isEmpty()) {
diff --git a/src/main/java/seedu/address/model/person/Address.java b/src/main/java/seedu/address/model/person/Telegram.java
similarity index 58%
rename from src/main/java/seedu/address/model/person/Address.java
rename to src/main/java/seedu/address/model/person/Telegram.java
index 60472ca22a0..4fa8d60fb86 100644
--- a/src/main/java/seedu/address/model/person/Address.java
+++ b/src/main/java/seedu/address/model/person/Telegram.java
@@ -5,11 +5,11 @@
 
 /**
  * Represents a Person's address in the address book.
- * Guarantees: immutable; is valid as declared in {@link #isValidAddress(String)}
+ * Guarantees: immutable; is valid as declared in {@link #isValidTelegram(String)}
  */
-public class Address {
+public class Telegram {
 
-    public static final String MESSAGE_CONSTRAINTS = "Addresses can take any values, and it should not be blank";
+    public static final String MESSAGE_CONSTRAINTS = "Telegram handles can take any values, and it should not be blank";
 
     /*
      * The first character of the address must not be a whitespace,
@@ -20,20 +20,20 @@ public class Address {
     public final String value;
 
     /**
-     * Constructs an {@code Address}.
+     * Constructs an {@code Telegram}.
      *
-     * @param address A valid address.
+     * @param telegram A valid telegram handle.
      */
-    public Address(String address) {
-        requireNonNull(address);
-        checkArgument(isValidAddress(address), MESSAGE_CONSTRAINTS);
-        value = address;
+    public Telegram(String telegram) {
+        requireNonNull(telegram);
+        checkArgument(isValidTelegram(telegram), MESSAGE_CONSTRAINTS);
+        value = telegram.charAt(0) == '@' ? telegram : "@" + telegram;
     }
 
     /**
      * Returns true if a given string is a valid email.
      */
-    public static boolean isValidAddress(String test) {
+    public static boolean isValidTelegram(String test) {
         return test.matches(VALIDATION_REGEX);
     }
 
@@ -45,8 +45,8 @@ public String toString() {
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
-                || (other instanceof Address // instanceof handles nulls
-                && value.equals(((Address) other).value)); // state check
+                || (other instanceof Telegram // instanceof handles nulls
+                && value.equals(((Telegram) other).value)); // state check
     }
 
     @Override
diff --git a/src/main/java/seedu/address/model/util/SampleDataUtil.java b/src/main/java/seedu/address/model/util/SampleDataUtil.java
index 1806da4facf..06d3df874a3 100644
--- a/src/main/java/seedu/address/model/util/SampleDataUtil.java
+++ b/src/main/java/seedu/address/model/util/SampleDataUtil.java
@@ -6,11 +6,11 @@
 
 import seedu.address.model.AddressBook;
 import seedu.address.model.ReadOnlyAddressBook;
-import seedu.address.model.person.Address;
 import seedu.address.model.person.Email;
 import seedu.address.model.person.Name;
 import seedu.address.model.person.Person;
 import seedu.address.model.person.Phone;
+import seedu.address.model.person.Telegram;
 import seedu.address.model.tag.Tag;
 
 /**
@@ -20,22 +20,22 @@ public class SampleDataUtil {
     public static Person[] getSamplePersons() {
         return new Person[] {
             new Person(new Name("Alex Yeoh"), new Phone("87438807"), new Email("alexyeoh@example.com"),
-                new Address("Blk 30 Geylang Street 29, #06-40"),
+                new Telegram("Blk 30 Geylang Street 29, #06-40"),
                 getTagSet("friends")),
             new Person(new Name("Bernice Yu"), new Phone("99272758"), new Email("berniceyu@example.com"),
-                new Address("Blk 30 Lorong 3 Serangoon Gardens, #07-18"),
+                new Telegram("Blk 30 Lorong 3 Serangoon Gardens, #07-18"),
                 getTagSet("colleagues", "friends")),
             new Person(new Name("Charlotte Oliveiro"), new Phone("93210283"), new Email("charlotte@example.com"),
-                new Address("Blk 11 Ang Mo Kio Street 74, #11-04"),
+                new Telegram("Blk 11 Ang Mo Kio Street 74, #11-04"),
                 getTagSet("neighbours")),
             new Person(new Name("David Li"), new Phone("91031282"), new Email("lidavid@example.com"),
-                new Address("Blk 436 Serangoon Gardens Street 26, #16-43"),
+                new Telegram("Blk 436 Serangoon Gardens Street 26, #16-43"),
                 getTagSet("family")),
             new Person(new Name("Irfan Ibrahim"), new Phone("92492021"), new Email("irfan@example.com"),
-                new Address("Blk 47 Tampines Street 20, #17-35"),
+                new Telegram("Blk 47 Tampines Street 20, #17-35"),
                 getTagSet("classmates")),
             new Person(new Name("Roy Balakrishnan"), new Phone("92624417"), new Email("royb@example.com"),
-                new Address("Blk 45 Aljunied Street 85, #11-31"),
+                new Telegram("Blk 45 Aljunied Street 85, #11-31"),
                 getTagSet("colleagues"))
         };
     }
diff --git a/src/main/java/seedu/address/storage/JsonAdaptedPerson.java b/src/main/java/seedu/address/storage/JsonAdaptedPerson.java
index a6321cec2ea..aa45fb21a0f 100644
--- a/src/main/java/seedu/address/storage/JsonAdaptedPerson.java
+++ b/src/main/java/seedu/address/storage/JsonAdaptedPerson.java
@@ -10,13 +10,14 @@
 import com.fasterxml.jackson.annotation.JsonProperty;
 
 import seedu.address.commons.exceptions.IllegalValueException;
-import seedu.address.model.person.Address;
 import seedu.address.model.person.Email;
 import seedu.address.model.person.Name;
 import seedu.address.model.person.Person;
 import seedu.address.model.person.Phone;
+import seedu.address.model.person.Telegram;
 import seedu.address.model.tag.Tag;
 
+
 /**
  * Jackson-friendly version of {@link Person}.
  */
@@ -27,7 +28,7 @@ class JsonAdaptedPerson {
     private final String name;
     private final String phone;
     private final String email;
-    private final String address;
+    private final String telegram;
     private final List<JsonAdaptedTag> tagged = new ArrayList<>();
 
     /**
@@ -40,7 +41,7 @@ public JsonAdaptedPerson(@JsonProperty("name") String name, @JsonProperty("phone
         this.name = name;
         this.phone = phone;
         this.email = email;
-        this.address = address;
+        this.telegram = address;
         if (tagged != null) {
             this.tagged.addAll(tagged);
         }
@@ -53,7 +54,7 @@ public JsonAdaptedPerson(Person source) {
         name = source.getName().fullName;
         phone = source.getPhone().value;
         email = source.getEmail().value;
-        address = source.getAddress().value;
+        telegram = source.getTelegram().value;
         tagged.addAll(source.getTags().stream()
                 .map(JsonAdaptedTag::new)
                 .collect(Collectors.toList()));
@@ -94,16 +95,17 @@ public Person toModelType() throws IllegalValueException {
         }
         final Email modelEmail = new Email(email);
 
-        if (address == null) {
-            throw new IllegalValueException(String.format(MISSING_FIELD_MESSAGE_FORMAT, Address.class.getSimpleName()));
+        if (telegram == null) {
+            throw new IllegalValueException(String.format(MISSING_FIELD_MESSAGE_FORMAT,
+                    Telegram.class.getSimpleName()));
         }
-        if (!Address.isValidAddress(address)) {
-            throw new IllegalValueException(Address.MESSAGE_CONSTRAINTS);
+        if (!Telegram.isValidTelegram(telegram)) {
+            throw new IllegalValueException(Telegram.MESSAGE_CONSTRAINTS);
         }
-        final Address modelAddress = new Address(address);
+        final Telegram modelTelegram = new Telegram(telegram);
 
         final Set<Tag> modelTags = new HashSet<>(personTags);
-        return new Person(modelName, modelPhone, modelEmail, modelAddress, modelTags);
+        return new Person(modelName, modelPhone, modelEmail, modelTelegram, modelTags);
     }
 
 }
diff --git a/src/main/java/seedu/address/ui/PersonDetailsCard.java b/src/main/java/seedu/address/ui/PersonDetailsCard.java
index 866c9a0c23a..18182d091ef 100644
--- a/src/main/java/seedu/address/ui/PersonDetailsCard.java
+++ b/src/main/java/seedu/address/ui/PersonDetailsCard.java
@@ -33,7 +33,7 @@ public class PersonDetailsCard extends UiPart<Region> {
     @FXML
     private Label phone;
     @FXML
-    private Label address;
+    private Label telegram;
     @FXML
     private Label email;
     @FXML
@@ -47,7 +47,7 @@ public PersonDetailsCard(Person person) {
         this.person = person;
         name.setText(person.getName().fullName);
         phone.setText(person.getPhone().value);
-        address.setText(person.getAddress().value);
+        telegram.setText(person.getTelegram().value);
         email.setText(person.getEmail().value);
         person.getTags().stream()
                 .sorted(Comparator.comparing(tag -> tag.tagName))
diff --git a/src/main/resources/view/PersonDetailsCard.fxml b/src/main/resources/view/PersonDetailsCard.fxml
index 932e7188e46..1938c2e5813 100644
--- a/src/main/resources/view/PersonDetailsCard.fxml
+++ b/src/main/resources/view/PersonDetailsCard.fxml
@@ -30,7 +30,7 @@
       </HBox>
       <FlowPane fx:id="tags" />
       <Label fx:id="phone" styleClass="cell_small_label" text="\$phone" />
-      <Label fx:id="address" styleClass="cell_small_label" text="\$address" />
+      <Label fx:id="telegram" styleClass="cell_small_label" text="\$telegram" />
       <Label fx:id="email" styleClass="cell_small_label" text="\$email" />
     </VBox>
       <rowConstraints>
diff --git a/src/test/data/JsonSerializableAddressBookTest/typicalPersonsAddressBook.json b/src/test/data/JsonSerializableAddressBookTest/typicalPersonsAddressBook.json
index f10eddee12e..f7af4d17d58 100644
--- a/src/test/data/JsonSerializableAddressBookTest/typicalPersonsAddressBook.json
+++ b/src/test/data/JsonSerializableAddressBookTest/typicalPersonsAddressBook.json
@@ -4,43 +4,43 @@
     "name" : "Alice Pauline",
     "phone" : "94351253",
     "email" : "alice@example.com",
-    "address" : "123, Jurong West Ave 6, #08-111",
+    "telegram" : "@aliceinwonderland",
     "tagged" : [ "friends" ]
   }, {
     "name" : "Benson Meier",
     "phone" : "98765432",
     "email" : "johnd@example.com",
-    "address" : "311, Clementi Ave 2, #02-25",
+    "telegram" : "@sonben",
     "tagged" : [ "owesMoney", "friends" ]
   }, {
     "name" : "Carl Kurz",
     "phone" : "95352563",
     "email" : "heinz@example.com",
-    "address" : "wall street",
+    "telegram" : "@caaarl",
     "tagged" : [ ]
   }, {
     "name" : "Daniel Meier",
     "phone" : "87652533",
     "email" : "cornelia@example.com",
-    "address" : "10th street",
+    "telegram" : "@dannyyyyy",
     "tagged" : [ "friends" ]
   }, {
     "name" : "Elle Meyer",
     "phone" : "9482224",
     "email" : "werner@example.com",
-    "address" : "michegan ave",
+    "telegram" : "@theletterl",
     "tagged" : [ ]
   }, {
     "name" : "Fiona Kunz",
     "phone" : "9482427",
     "email" : "lydia@example.com",
-    "address" : "little tokyo",
+    "telegram" : "@princessshrek",
     "tagged" : [ ]
   }, {
     "name" : "George Best",
     "phone" : "9482442",
     "email" : "anna@example.com",
-    "address" : "4th street",
+    "telegram" : "@georgebestest",
     "tagged" : [ ]
   } ]
 }
diff --git a/src/test/java/seedu/address/logic/LogicManagerTest.java b/src/test/java/seedu/address/logic/LogicManagerTest.java
index ad923ac249a..ee791abb554 100644
--- a/src/test/java/seedu/address/logic/LogicManagerTest.java
+++ b/src/test/java/seedu/address/logic/LogicManagerTest.java
@@ -3,10 +3,10 @@
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static seedu.address.commons.core.Messages.MESSAGE_INVALID_PERSON_DISPLAYED_INDEX;
 import static seedu.address.commons.core.Messages.MESSAGE_UNKNOWN_COMMAND;
-import static seedu.address.logic.commands.CommandTestUtil.ADDRESS_DESC_AMY;
 import static seedu.address.logic.commands.CommandTestUtil.EMAIL_DESC_AMY;
 import static seedu.address.logic.commands.CommandTestUtil.NAME_DESC_AMY;
 import static seedu.address.logic.commands.CommandTestUtil.PHONE_DESC_AMY;
+import static seedu.address.logic.commands.CommandTestUtil.TELEGRAM_DESC_AMY;
 import static seedu.address.testutil.Assert.assertThrows;
 import static seedu.address.testutil.TypicalPersons.AMY;
 
@@ -80,7 +80,7 @@ public void execute_storageThrowsIoException_throwsCommandException() {
 
         // Execute add command
         String addCommand = AddCommand.COMMAND_WORD + NAME_DESC_AMY + PHONE_DESC_AMY + EMAIL_DESC_AMY
-                + ADDRESS_DESC_AMY;
+                + TELEGRAM_DESC_AMY;
         Person expectedPerson = new PersonBuilder(AMY).withTags().build();
         ModelManager expectedModel = new ModelManager();
         expectedModel.addPerson(expectedPerson);
diff --git a/src/test/java/seedu/address/logic/commands/CommandTestUtil.java b/src/test/java/seedu/address/logic/commands/CommandTestUtil.java
index 643a1d08069..28cf6dc4fa5 100644
--- a/src/test/java/seedu/address/logic/commands/CommandTestUtil.java
+++ b/src/test/java/seedu/address/logic/commands/CommandTestUtil.java
@@ -2,11 +2,11 @@
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertTrue;
-import static seedu.address.logic.parser.CliSyntax.PREFIX_ADDRESS;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_EMAIL;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_NAME;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_PHONE;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_TAG;
+import static seedu.address.logic.parser.CliSyntax.PREFIX_TELEGRAM;
 import static seedu.address.testutil.Assert.assertThrows;
 
 import java.util.ArrayList;
@@ -32,8 +32,8 @@ public class CommandTestUtil {
     public static final String VALID_PHONE_BOB = "22222222";
     public static final String VALID_EMAIL_AMY = "amy@example.com";
     public static final String VALID_EMAIL_BOB = "bob@example.com";
-    public static final String VALID_ADDRESS_AMY = "Block 312, Amy Street 1";
-    public static final String VALID_ADDRESS_BOB = "Block 123, Bobby Street 3";
+    public static final String VALID_TELEGRAM_AMY = "@amyamyamy";
+    public static final String VALID_TELEGRAM_BOB = "@heresbobby";
     public static final String VALID_TAG_HUSBAND = "husband";
     public static final String VALID_TAG_FRIEND = "friend";
 
@@ -43,15 +43,15 @@ public class CommandTestUtil {
     public static final String PHONE_DESC_BOB = " " + PREFIX_PHONE + VALID_PHONE_BOB;
     public static final String EMAIL_DESC_AMY = " " + PREFIX_EMAIL + VALID_EMAIL_AMY;
     public static final String EMAIL_DESC_BOB = " " + PREFIX_EMAIL + VALID_EMAIL_BOB;
-    public static final String ADDRESS_DESC_AMY = " " + PREFIX_ADDRESS + VALID_ADDRESS_AMY;
-    public static final String ADDRESS_DESC_BOB = " " + PREFIX_ADDRESS + VALID_ADDRESS_BOB;
+    public static final String TELEGRAM_DESC_AMY = " " + PREFIX_TELEGRAM + VALID_TELEGRAM_AMY;
+    public static final String TELEGRAM_DESC_BOB = " " + PREFIX_TELEGRAM + VALID_TELEGRAM_BOB;
     public static final String TAG_DESC_FRIEND = " " + PREFIX_TAG + VALID_TAG_FRIEND;
     public static final String TAG_DESC_HUSBAND = " " + PREFIX_TAG + VALID_TAG_HUSBAND;
 
     public static final String INVALID_NAME_DESC = " " + PREFIX_NAME + "James&"; // '&' not allowed in names
     public static final String INVALID_PHONE_DESC = " " + PREFIX_PHONE + "911a"; // 'a' not allowed in phones
     public static final String INVALID_EMAIL_DESC = " " + PREFIX_EMAIL + "bob!yahoo"; // missing '@' symbol
-    public static final String INVALID_ADDRESS_DESC = " " + PREFIX_ADDRESS; // empty string not allowed for addresses
+    public static final String INVALID_ADDRESS_DESC = " " + PREFIX_TELEGRAM; // empty string not allowed for telegram
     public static final String INVALID_TAG_DESC = " " + PREFIX_TAG + "hubby*"; // '*' not allowed in tags
 
     public static final String PREAMBLE_WHITESPACE = "\t  \r  \n";
@@ -62,10 +62,10 @@ public class CommandTestUtil {
 
     static {
         DESC_AMY = new EditPersonDescriptorBuilder().withName(VALID_NAME_AMY)
-                .withPhone(VALID_PHONE_AMY).withEmail(VALID_EMAIL_AMY).withAddress(VALID_ADDRESS_AMY)
+                .withPhone(VALID_PHONE_AMY).withEmail(VALID_EMAIL_AMY).withTelegram(VALID_TELEGRAM_AMY)
                 .withTags(VALID_TAG_FRIEND).build();
         DESC_BOB = new EditPersonDescriptorBuilder().withName(VALID_NAME_BOB)
-                .withPhone(VALID_PHONE_BOB).withEmail(VALID_EMAIL_BOB).withAddress(VALID_ADDRESS_BOB)
+                .withPhone(VALID_PHONE_BOB).withEmail(VALID_EMAIL_BOB).withTelegram(VALID_TELEGRAM_BOB)
                 .withTags(VALID_TAG_HUSBAND, VALID_TAG_FRIEND).build();
     }
 
diff --git a/src/test/java/seedu/address/logic/commands/EditPersonDescriptorTest.java b/src/test/java/seedu/address/logic/commands/EditPersonDescriptorTest.java
index e0288792e72..0936a305d99 100644
--- a/src/test/java/seedu/address/logic/commands/EditPersonDescriptorTest.java
+++ b/src/test/java/seedu/address/logic/commands/EditPersonDescriptorTest.java
@@ -4,11 +4,11 @@
 import static org.junit.jupiter.api.Assertions.assertTrue;
 import static seedu.address.logic.commands.CommandTestUtil.DESC_AMY;
 import static seedu.address.logic.commands.CommandTestUtil.DESC_BOB;
-import static seedu.address.logic.commands.CommandTestUtil.VALID_ADDRESS_BOB;
 import static seedu.address.logic.commands.CommandTestUtil.VALID_EMAIL_BOB;
 import static seedu.address.logic.commands.CommandTestUtil.VALID_NAME_BOB;
 import static seedu.address.logic.commands.CommandTestUtil.VALID_PHONE_BOB;
 import static seedu.address.logic.commands.CommandTestUtil.VALID_TAG_HUSBAND;
+import static seedu.address.logic.commands.CommandTestUtil.VALID_TELEGRAM_BOB;
 
 import org.junit.jupiter.api.Test;
 
@@ -48,7 +48,7 @@ public void equals() {
         assertFalse(DESC_AMY.equals(editedAmy));
 
         // different address -> returns false
-        editedAmy = new EditPersonDescriptorBuilder(DESC_AMY).withAddress(VALID_ADDRESS_BOB).build();
+        editedAmy = new EditPersonDescriptorBuilder(DESC_AMY).withTelegram(VALID_TELEGRAM_BOB).build();
         assertFalse(DESC_AMY.equals(editedAmy));
 
         // different tags -> returns false
diff --git a/src/test/java/seedu/address/logic/parser/AddCommandParserTest.java b/src/test/java/seedu/address/logic/parser/AddCommandParserTest.java
index 5cf487d7ebb..63e5ffe368e 100644
--- a/src/test/java/seedu/address/logic/parser/AddCommandParserTest.java
+++ b/src/test/java/seedu/address/logic/parser/AddCommandParserTest.java
@@ -1,8 +1,6 @@
 package seedu.address.logic.parser;
 
 import static seedu.address.commons.core.Messages.MESSAGE_INVALID_COMMAND_FORMAT;
-import static seedu.address.logic.commands.CommandTestUtil.ADDRESS_DESC_AMY;
-import static seedu.address.logic.commands.CommandTestUtil.ADDRESS_DESC_BOB;
 import static seedu.address.logic.commands.CommandTestUtil.EMAIL_DESC_AMY;
 import static seedu.address.logic.commands.CommandTestUtil.EMAIL_DESC_BOB;
 import static seedu.address.logic.commands.CommandTestUtil.INVALID_ADDRESS_DESC;
@@ -18,12 +16,14 @@
 import static seedu.address.logic.commands.CommandTestUtil.PREAMBLE_WHITESPACE;
 import static seedu.address.logic.commands.CommandTestUtil.TAG_DESC_FRIEND;
 import static seedu.address.logic.commands.CommandTestUtil.TAG_DESC_HUSBAND;
-import static seedu.address.logic.commands.CommandTestUtil.VALID_ADDRESS_BOB;
+import static seedu.address.logic.commands.CommandTestUtil.TELEGRAM_DESC_AMY;
+import static seedu.address.logic.commands.CommandTestUtil.TELEGRAM_DESC_BOB;
 import static seedu.address.logic.commands.CommandTestUtil.VALID_EMAIL_BOB;
 import static seedu.address.logic.commands.CommandTestUtil.VALID_NAME_BOB;
 import static seedu.address.logic.commands.CommandTestUtil.VALID_PHONE_BOB;
 import static seedu.address.logic.commands.CommandTestUtil.VALID_TAG_FRIEND;
 import static seedu.address.logic.commands.CommandTestUtil.VALID_TAG_HUSBAND;
+import static seedu.address.logic.commands.CommandTestUtil.VALID_TELEGRAM_BOB;
 import static seedu.address.logic.parser.CommandParserTestUtil.assertParseFailure;
 import static seedu.address.logic.parser.CommandParserTestUtil.assertParseSuccess;
 import static seedu.address.testutil.TypicalPersons.AMY;
@@ -32,11 +32,11 @@
 import org.junit.jupiter.api.Test;
 
 import seedu.address.logic.commands.AddCommand;
-import seedu.address.model.person.Address;
 import seedu.address.model.person.Email;
 import seedu.address.model.person.Name;
 import seedu.address.model.person.Person;
 import seedu.address.model.person.Phone;
+import seedu.address.model.person.Telegram;
 import seedu.address.model.tag.Tag;
 import seedu.address.testutil.PersonBuilder;
 
@@ -49,28 +49,28 @@ public void parse_allFieldsPresent_success() {
 
         // whitespace only preamble
         assertParseSuccess(parser, PREAMBLE_WHITESPACE + NAME_DESC_BOB + PHONE_DESC_BOB + EMAIL_DESC_BOB
-                + ADDRESS_DESC_BOB + TAG_DESC_FRIEND, new AddCommand(expectedPerson));
+                + TELEGRAM_DESC_BOB + TAG_DESC_FRIEND, new AddCommand(expectedPerson));
 
         // multiple names - last name accepted
         assertParseSuccess(parser, NAME_DESC_AMY + NAME_DESC_BOB + PHONE_DESC_BOB + EMAIL_DESC_BOB
-                + ADDRESS_DESC_BOB + TAG_DESC_FRIEND, new AddCommand(expectedPerson));
+                + TELEGRAM_DESC_BOB + TAG_DESC_FRIEND, new AddCommand(expectedPerson));
 
         // multiple phones - last phone accepted
         assertParseSuccess(parser, NAME_DESC_BOB + PHONE_DESC_AMY + PHONE_DESC_BOB + EMAIL_DESC_BOB
-                + ADDRESS_DESC_BOB + TAG_DESC_FRIEND, new AddCommand(expectedPerson));
+                + TELEGRAM_DESC_BOB + TAG_DESC_FRIEND, new AddCommand(expectedPerson));
 
         // multiple emails - last email accepted
         assertParseSuccess(parser, NAME_DESC_BOB + PHONE_DESC_BOB + EMAIL_DESC_AMY + EMAIL_DESC_BOB
-                + ADDRESS_DESC_BOB + TAG_DESC_FRIEND, new AddCommand(expectedPerson));
+                + TELEGRAM_DESC_BOB + TAG_DESC_FRIEND, new AddCommand(expectedPerson));
 
         // multiple addresses - last address accepted
-        assertParseSuccess(parser, NAME_DESC_BOB + PHONE_DESC_BOB + EMAIL_DESC_BOB + ADDRESS_DESC_AMY
-                + ADDRESS_DESC_BOB + TAG_DESC_FRIEND, new AddCommand(expectedPerson));
+        assertParseSuccess(parser, NAME_DESC_BOB + PHONE_DESC_BOB + EMAIL_DESC_BOB + TELEGRAM_DESC_AMY
+                + TELEGRAM_DESC_BOB + TAG_DESC_FRIEND, new AddCommand(expectedPerson));
 
         // multiple tags - all accepted
         Person expectedPersonMultipleTags = new PersonBuilder(BOB).withTags(VALID_TAG_FRIEND, VALID_TAG_HUSBAND)
                 .build();
-        assertParseSuccess(parser, NAME_DESC_BOB + PHONE_DESC_BOB + EMAIL_DESC_BOB + ADDRESS_DESC_BOB
+        assertParseSuccess(parser, NAME_DESC_BOB + PHONE_DESC_BOB + EMAIL_DESC_BOB + TELEGRAM_DESC_BOB
                 + TAG_DESC_HUSBAND + TAG_DESC_FRIEND, new AddCommand(expectedPersonMultipleTags));
     }
 
@@ -78,7 +78,7 @@ public void parse_allFieldsPresent_success() {
     public void parse_optionalFieldsMissing_success() {
         // zero tags
         Person expectedPerson = new PersonBuilder(AMY).withTags().build();
-        assertParseSuccess(parser, NAME_DESC_AMY + PHONE_DESC_AMY + EMAIL_DESC_AMY + ADDRESS_DESC_AMY,
+        assertParseSuccess(parser, NAME_DESC_AMY + PHONE_DESC_AMY + EMAIL_DESC_AMY + TELEGRAM_DESC_AMY,
                 new AddCommand(expectedPerson));
     }
 
@@ -87,46 +87,46 @@ public void parse_compulsoryFieldMissing_failure() {
         String expectedMessage = String.format(MESSAGE_INVALID_COMMAND_FORMAT, AddCommand.MESSAGE_USAGE);
 
         // missing name prefix
-        assertParseFailure(parser, VALID_NAME_BOB + PHONE_DESC_BOB + EMAIL_DESC_BOB + ADDRESS_DESC_BOB,
+        assertParseFailure(parser, VALID_NAME_BOB + PHONE_DESC_BOB + EMAIL_DESC_BOB + TELEGRAM_DESC_BOB,
                 expectedMessage);
 
         // missing phone prefix
-        assertParseFailure(parser, NAME_DESC_BOB + VALID_PHONE_BOB + EMAIL_DESC_BOB + ADDRESS_DESC_BOB,
+        assertParseFailure(parser, NAME_DESC_BOB + VALID_PHONE_BOB + EMAIL_DESC_BOB + TELEGRAM_DESC_BOB,
                 expectedMessage);
 
         // missing email prefix
-        assertParseFailure(parser, NAME_DESC_BOB + PHONE_DESC_BOB + VALID_EMAIL_BOB + ADDRESS_DESC_BOB,
+        assertParseFailure(parser, NAME_DESC_BOB + PHONE_DESC_BOB + VALID_EMAIL_BOB + TELEGRAM_DESC_BOB,
                 expectedMessage);
 
         // missing address prefix
-        assertParseFailure(parser, NAME_DESC_BOB + PHONE_DESC_BOB + EMAIL_DESC_BOB + VALID_ADDRESS_BOB,
+        assertParseFailure(parser, NAME_DESC_BOB + PHONE_DESC_BOB + EMAIL_DESC_BOB + VALID_TELEGRAM_BOB,
                 expectedMessage);
 
         // all prefixes missing
-        assertParseFailure(parser, VALID_NAME_BOB + VALID_PHONE_BOB + VALID_EMAIL_BOB + VALID_ADDRESS_BOB,
+        assertParseFailure(parser, VALID_NAME_BOB + VALID_PHONE_BOB + VALID_EMAIL_BOB + VALID_TELEGRAM_BOB,
                 expectedMessage);
     }
 
     @Test
     public void parse_invalidValue_failure() {
         // invalid name
-        assertParseFailure(parser, INVALID_NAME_DESC + PHONE_DESC_BOB + EMAIL_DESC_BOB + ADDRESS_DESC_BOB
+        assertParseFailure(parser, INVALID_NAME_DESC + PHONE_DESC_BOB + EMAIL_DESC_BOB + TELEGRAM_DESC_BOB
                 + TAG_DESC_HUSBAND + TAG_DESC_FRIEND, Name.MESSAGE_CONSTRAINTS);
 
         // invalid phone
-        assertParseFailure(parser, NAME_DESC_BOB + INVALID_PHONE_DESC + EMAIL_DESC_BOB + ADDRESS_DESC_BOB
+        assertParseFailure(parser, NAME_DESC_BOB + INVALID_PHONE_DESC + EMAIL_DESC_BOB + TELEGRAM_DESC_BOB
                 + TAG_DESC_HUSBAND + TAG_DESC_FRIEND, Phone.MESSAGE_CONSTRAINTS);
 
         // invalid email
-        assertParseFailure(parser, NAME_DESC_BOB + PHONE_DESC_BOB + INVALID_EMAIL_DESC + ADDRESS_DESC_BOB
+        assertParseFailure(parser, NAME_DESC_BOB + PHONE_DESC_BOB + INVALID_EMAIL_DESC + TELEGRAM_DESC_BOB
                 + TAG_DESC_HUSBAND + TAG_DESC_FRIEND, Email.MESSAGE_CONSTRAINTS);
 
         // invalid address
         assertParseFailure(parser, NAME_DESC_BOB + PHONE_DESC_BOB + EMAIL_DESC_BOB + INVALID_ADDRESS_DESC
-                + TAG_DESC_HUSBAND + TAG_DESC_FRIEND, Address.MESSAGE_CONSTRAINTS);
+                + TAG_DESC_HUSBAND + TAG_DESC_FRIEND, Telegram.MESSAGE_CONSTRAINTS);
 
         // invalid tag
-        assertParseFailure(parser, NAME_DESC_BOB + PHONE_DESC_BOB + EMAIL_DESC_BOB + ADDRESS_DESC_BOB
+        assertParseFailure(parser, NAME_DESC_BOB + PHONE_DESC_BOB + EMAIL_DESC_BOB + TELEGRAM_DESC_BOB
                 + INVALID_TAG_DESC + VALID_TAG_FRIEND, Tag.MESSAGE_CONSTRAINTS);
 
         // two invalid values, only first invalid value reported
@@ -135,7 +135,7 @@ public void parse_invalidValue_failure() {
 
         // non-empty preamble
         assertParseFailure(parser, PREAMBLE_NON_EMPTY + NAME_DESC_BOB + PHONE_DESC_BOB + EMAIL_DESC_BOB
-                + ADDRESS_DESC_BOB + TAG_DESC_HUSBAND + TAG_DESC_FRIEND,
+                + TELEGRAM_DESC_BOB + TAG_DESC_HUSBAND + TAG_DESC_FRIEND,
                 String.format(MESSAGE_INVALID_COMMAND_FORMAT, AddCommand.MESSAGE_USAGE));
     }
 }
diff --git a/src/test/java/seedu/address/logic/parser/EditCommandParserTest.java b/src/test/java/seedu/address/logic/parser/EditCommandParserTest.java
index 2ff31522486..0fd4e9d1077 100644
--- a/src/test/java/seedu/address/logic/parser/EditCommandParserTest.java
+++ b/src/test/java/seedu/address/logic/parser/EditCommandParserTest.java
@@ -1,8 +1,6 @@
 package seedu.address.logic.parser;
 
 import static seedu.address.commons.core.Messages.MESSAGE_INVALID_COMMAND_FORMAT;
-import static seedu.address.logic.commands.CommandTestUtil.ADDRESS_DESC_AMY;
-import static seedu.address.logic.commands.CommandTestUtil.ADDRESS_DESC_BOB;
 import static seedu.address.logic.commands.CommandTestUtil.EMAIL_DESC_AMY;
 import static seedu.address.logic.commands.CommandTestUtil.EMAIL_DESC_BOB;
 import static seedu.address.logic.commands.CommandTestUtil.INVALID_ADDRESS_DESC;
@@ -15,8 +13,8 @@
 import static seedu.address.logic.commands.CommandTestUtil.PHONE_DESC_BOB;
 import static seedu.address.logic.commands.CommandTestUtil.TAG_DESC_FRIEND;
 import static seedu.address.logic.commands.CommandTestUtil.TAG_DESC_HUSBAND;
-import static seedu.address.logic.commands.CommandTestUtil.VALID_ADDRESS_AMY;
-import static seedu.address.logic.commands.CommandTestUtil.VALID_ADDRESS_BOB;
+import static seedu.address.logic.commands.CommandTestUtil.TELEGRAM_DESC_AMY;
+import static seedu.address.logic.commands.CommandTestUtil.TELEGRAM_DESC_BOB;
 import static seedu.address.logic.commands.CommandTestUtil.VALID_EMAIL_AMY;
 import static seedu.address.logic.commands.CommandTestUtil.VALID_EMAIL_BOB;
 import static seedu.address.logic.commands.CommandTestUtil.VALID_NAME_AMY;
@@ -24,6 +22,8 @@
 import static seedu.address.logic.commands.CommandTestUtil.VALID_PHONE_BOB;
 import static seedu.address.logic.commands.CommandTestUtil.VALID_TAG_FRIEND;
 import static seedu.address.logic.commands.CommandTestUtil.VALID_TAG_HUSBAND;
+import static seedu.address.logic.commands.CommandTestUtil.VALID_TELEGRAM_AMY;
+import static seedu.address.logic.commands.CommandTestUtil.VALID_TELEGRAM_BOB;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_TAG;
 import static seedu.address.logic.parser.CommandParserTestUtil.assertParseFailure;
 import static seedu.address.logic.parser.CommandParserTestUtil.assertParseSuccess;
@@ -36,10 +36,10 @@
 import seedu.address.commons.core.index.Index;
 import seedu.address.logic.commands.EditCommand;
 import seedu.address.logic.commands.EditCommand.EditPersonDescriptor;
-import seedu.address.model.person.Address;
 import seedu.address.model.person.Email;
 import seedu.address.model.person.Name;
 import seedu.address.model.person.Phone;
+import seedu.address.model.person.Telegram;
 import seedu.address.model.tag.Tag;
 import seedu.address.testutil.EditPersonDescriptorBuilder;
 
@@ -84,7 +84,7 @@ public void parse_invalidValue_failure() {
         assertParseFailure(parser, "1" + INVALID_NAME_DESC, Name.MESSAGE_CONSTRAINTS); // invalid name
         assertParseFailure(parser, "1" + INVALID_PHONE_DESC, Phone.MESSAGE_CONSTRAINTS); // invalid phone
         assertParseFailure(parser, "1" + INVALID_EMAIL_DESC, Email.MESSAGE_CONSTRAINTS); // invalid email
-        assertParseFailure(parser, "1" + INVALID_ADDRESS_DESC, Address.MESSAGE_CONSTRAINTS); // invalid address
+        assertParseFailure(parser, "1" + INVALID_ADDRESS_DESC, Telegram.MESSAGE_CONSTRAINTS); // invalid address
         assertParseFailure(parser, "1" + INVALID_TAG_DESC, Tag.MESSAGE_CONSTRAINTS); // invalid tag
 
         // invalid phone followed by valid email
@@ -101,7 +101,7 @@ public void parse_invalidValue_failure() {
         assertParseFailure(parser, "1" + TAG_EMPTY + TAG_DESC_FRIEND + TAG_DESC_HUSBAND, Tag.MESSAGE_CONSTRAINTS);
 
         // multiple invalid values, but only the first invalid value is captured
-        assertParseFailure(parser, "1" + INVALID_NAME_DESC + INVALID_EMAIL_DESC + VALID_ADDRESS_AMY + VALID_PHONE_AMY,
+        assertParseFailure(parser, "1" + INVALID_NAME_DESC + INVALID_EMAIL_DESC + VALID_TELEGRAM_AMY + VALID_PHONE_AMY,
                 Name.MESSAGE_CONSTRAINTS);
     }
 
@@ -109,10 +109,10 @@ public void parse_invalidValue_failure() {
     public void parse_allFieldsSpecified_success() {
         Index targetIndex = INDEX_SECOND_PERSON;
         String userInput = targetIndex.getOneBased() + PHONE_DESC_BOB + TAG_DESC_HUSBAND
-                + EMAIL_DESC_AMY + ADDRESS_DESC_AMY + NAME_DESC_AMY + TAG_DESC_FRIEND;
+                + EMAIL_DESC_AMY + TELEGRAM_DESC_AMY + NAME_DESC_AMY + TAG_DESC_FRIEND;
 
         EditPersonDescriptor descriptor = new EditPersonDescriptorBuilder().withName(VALID_NAME_AMY)
-                .withPhone(VALID_PHONE_BOB).withEmail(VALID_EMAIL_AMY).withAddress(VALID_ADDRESS_AMY)
+                .withPhone(VALID_PHONE_BOB).withEmail(VALID_EMAIL_AMY).withTelegram(VALID_TELEGRAM_AMY)
                 .withTags(VALID_TAG_HUSBAND, VALID_TAG_FRIEND).build();
         EditCommand expectedCommand = new EditCommand(targetIndex, descriptor);
 
@@ -153,8 +153,8 @@ public void parse_oneFieldSpecified_success() {
         assertParseSuccess(parser, userInput, expectedCommand);
 
         // address
-        userInput = targetIndex.getOneBased() + ADDRESS_DESC_AMY;
-        descriptor = new EditPersonDescriptorBuilder().withAddress(VALID_ADDRESS_AMY).build();
+        userInput = targetIndex.getOneBased() + TELEGRAM_DESC_AMY;
+        descriptor = new EditPersonDescriptorBuilder().withTelegram(VALID_TELEGRAM_AMY).build();
         expectedCommand = new EditCommand(targetIndex, descriptor);
         assertParseSuccess(parser, userInput, expectedCommand);
 
@@ -168,12 +168,14 @@ public void parse_oneFieldSpecified_success() {
     @Test
     public void parse_multipleRepeatedFields_acceptsLast() {
         Index targetIndex = INDEX_FIRST_PERSON;
-        String userInput = targetIndex.getOneBased() + PHONE_DESC_AMY + ADDRESS_DESC_AMY + EMAIL_DESC_AMY
-                + TAG_DESC_FRIEND + PHONE_DESC_AMY + ADDRESS_DESC_AMY + EMAIL_DESC_AMY + TAG_DESC_FRIEND
-                + PHONE_DESC_BOB + ADDRESS_DESC_BOB + EMAIL_DESC_BOB + TAG_DESC_HUSBAND;
+        String userInput = targetIndex.getOneBased() + PHONE_DESC_AMY + TELEGRAM_DESC_AMY + EMAIL_DESC_AMY
+                + TAG_DESC_FRIEND + PHONE_DESC_AMY + TELEGRAM_DESC_AMY + EMAIL_DESC_AMY + TAG_DESC_FRIEND
+                + PHONE_DESC_BOB + TELEGRAM_DESC_BOB + EMAIL_DESC_BOB + TAG_DESC_HUSBAND;
 
         EditPersonDescriptor descriptor = new EditPersonDescriptorBuilder().withPhone(VALID_PHONE_BOB)
-                .withEmail(VALID_EMAIL_BOB).withAddress(VALID_ADDRESS_BOB).withTags(VALID_TAG_FRIEND, VALID_TAG_HUSBAND)
+                .withEmail(VALID_EMAIL_BOB)
+                .withTelegram(VALID_TELEGRAM_BOB)
+                .withTags(VALID_TAG_FRIEND, VALID_TAG_HUSBAND)
                 .build();
         EditCommand expectedCommand = new EditCommand(targetIndex, descriptor);
 
@@ -190,10 +192,10 @@ public void parse_invalidValueFollowedByValidValue_success() {
         assertParseSuccess(parser, userInput, expectedCommand);
 
         // other valid values specified
-        userInput = targetIndex.getOneBased() + EMAIL_DESC_BOB + INVALID_PHONE_DESC + ADDRESS_DESC_BOB
+        userInput = targetIndex.getOneBased() + EMAIL_DESC_BOB + INVALID_PHONE_DESC + TELEGRAM_DESC_BOB
                 + PHONE_DESC_BOB;
         descriptor = new EditPersonDescriptorBuilder().withPhone(VALID_PHONE_BOB).withEmail(VALID_EMAIL_BOB)
-                .withAddress(VALID_ADDRESS_BOB).build();
+                .withTelegram(VALID_TELEGRAM_BOB).build();
         expectedCommand = new EditCommand(targetIndex, descriptor);
         assertParseSuccess(parser, userInput, expectedCommand);
     }
diff --git a/src/test/java/seedu/address/logic/parser/ParserUtilTest.java b/src/test/java/seedu/address/logic/parser/ParserUtilTest.java
index 4256788b1a7..59454bf5d98 100644
--- a/src/test/java/seedu/address/logic/parser/ParserUtilTest.java
+++ b/src/test/java/seedu/address/logic/parser/ParserUtilTest.java
@@ -14,10 +14,10 @@
 import org.junit.jupiter.api.Test;
 
 import seedu.address.logic.parser.exceptions.ParseException;
-import seedu.address.model.person.Address;
 import seedu.address.model.person.Email;
 import seedu.address.model.person.Name;
 import seedu.address.model.person.Phone;
+import seedu.address.model.person.Telegram;
 import seedu.address.model.tag.Tag;
 
 public class ParserUtilTest {
@@ -104,25 +104,25 @@ public void parsePhone_validValueWithWhitespace_returnsTrimmedPhone() throws Exc
 
     @Test
     public void parseAddress_null_throwsNullPointerException() {
-        assertThrows(NullPointerException.class, () -> ParserUtil.parseAddress((String) null));
+        assertThrows(NullPointerException.class, () -> ParserUtil.parseTelegram((String) null));
     }
 
     @Test
     public void parseAddress_invalidValue_throwsParseException() {
-        assertThrows(ParseException.class, () -> ParserUtil.parseAddress(INVALID_ADDRESS));
+        assertThrows(ParseException.class, () -> ParserUtil.parseTelegram(INVALID_ADDRESS));
     }
 
     @Test
     public void parseAddress_validValueWithoutWhitespace_returnsAddress() throws Exception {
-        Address expectedAddress = new Address(VALID_ADDRESS);
-        assertEquals(expectedAddress, ParserUtil.parseAddress(VALID_ADDRESS));
+        Telegram expectedTelegram = new Telegram(VALID_ADDRESS);
+        assertEquals(expectedTelegram, ParserUtil.parseTelegram(VALID_ADDRESS));
     }
 
     @Test
     public void parseAddress_validValueWithWhitespace_returnsTrimmedAddress() throws Exception {
         String addressWithWhitespace = WHITESPACE + VALID_ADDRESS + WHITESPACE;
-        Address expectedAddress = new Address(VALID_ADDRESS);
-        assertEquals(expectedAddress, ParserUtil.parseAddress(addressWithWhitespace));
+        Telegram expectedTelegram = new Telegram(VALID_ADDRESS);
+        assertEquals(expectedTelegram, ParserUtil.parseTelegram(addressWithWhitespace));
     }
 
     @Test
diff --git a/src/test/java/seedu/address/model/AddressBookTest.java b/src/test/java/seedu/address/model/AddressBookTest.java
index 87782528ecd..fbd633140f2 100644
--- a/src/test/java/seedu/address/model/AddressBookTest.java
+++ b/src/test/java/seedu/address/model/AddressBookTest.java
@@ -3,8 +3,8 @@
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertTrue;
-import static seedu.address.logic.commands.CommandTestUtil.VALID_ADDRESS_BOB;
 import static seedu.address.logic.commands.CommandTestUtil.VALID_TAG_HUSBAND;
+import static seedu.address.logic.commands.CommandTestUtil.VALID_TELEGRAM_BOB;
 import static seedu.address.testutil.Assert.assertThrows;
 import static seedu.address.testutil.TypicalPersons.ALICE;
 import static seedu.address.testutil.TypicalPersons.getTypicalAddressBook;
@@ -46,7 +46,7 @@ public void resetData_withValidReadOnlyAddressBook_replacesData() {
     @Test
     public void resetData_withDuplicatePersons_throwsDuplicatePersonException() {
         // Two persons with the same identity fields
-        Person editedAlice = new PersonBuilder(ALICE).withAddress(VALID_ADDRESS_BOB).withTags(VALID_TAG_HUSBAND)
+        Person editedAlice = new PersonBuilder(ALICE).withTelegram(VALID_TELEGRAM_BOB).withTags(VALID_TAG_HUSBAND)
                 .build();
         List<Person> newPersons = Arrays.asList(ALICE, editedAlice);
         AddressBookStub newData = new AddressBookStub(newPersons);
@@ -73,7 +73,7 @@ public void hasPerson_personInAddressBook_returnsTrue() {
     @Test
     public void hasPerson_personWithSameIdentityFieldsInAddressBook_returnsTrue() {
         addressBook.addPerson(ALICE);
-        Person editedAlice = new PersonBuilder(ALICE).withAddress(VALID_ADDRESS_BOB).withTags(VALID_TAG_HUSBAND)
+        Person editedAlice = new PersonBuilder(ALICE).withTelegram(VALID_TELEGRAM_BOB).withTags(VALID_TAG_HUSBAND)
                 .build();
         assertTrue(addressBook.hasPerson(editedAlice));
     }
diff --git a/src/test/java/seedu/address/model/person/AddressTest.java b/src/test/java/seedu/address/model/person/AddressTest.java
deleted file mode 100644
index dcd3be87b3a..00000000000
--- a/src/test/java/seedu/address/model/person/AddressTest.java
+++ /dev/null
@@ -1,36 +0,0 @@
-package seedu.address.model.person;
-
-import static org.junit.jupiter.api.Assertions.assertFalse;
-import static org.junit.jupiter.api.Assertions.assertTrue;
-import static seedu.address.testutil.Assert.assertThrows;
-
-import org.junit.jupiter.api.Test;
-
-public class AddressTest {
-
-    @Test
-    public void constructor_null_throwsNullPointerException() {
-        assertThrows(NullPointerException.class, () -> new Address(null));
-    }
-
-    @Test
-    public void constructor_invalidAddress_throwsIllegalArgumentException() {
-        String invalidAddress = "";
-        assertThrows(IllegalArgumentException.class, () -> new Address(invalidAddress));
-    }
-
-    @Test
-    public void isValidAddress() {
-        // null address
-        assertThrows(NullPointerException.class, () -> Address.isValidAddress(null));
-
-        // invalid addresses
-        assertFalse(Address.isValidAddress("")); // empty string
-        assertFalse(Address.isValidAddress(" ")); // spaces only
-
-        // valid addresses
-        assertTrue(Address.isValidAddress("Blk 456, Den Road, #01-355"));
-        assertTrue(Address.isValidAddress("-")); // one character
-        assertTrue(Address.isValidAddress("Leng Inc; 1234 Market St; San Francisco CA 2349879; USA")); // long address
-    }
-}
diff --git a/src/test/java/seedu/address/model/person/NameContainsKeywordsPredicateTest.java b/src/test/java/seedu/address/model/person/NameContainsKeywordsPredicateTest.java
index f136664e017..6587e07d9a8 100644
--- a/src/test/java/seedu/address/model/person/NameContainsKeywordsPredicateTest.java
+++ b/src/test/java/seedu/address/model/person/NameContainsKeywordsPredicateTest.java
@@ -70,6 +70,6 @@ public void test_nameDoesNotContainKeywords_returnsFalse() {
         // Keywords match phone, email and address, but does not match name
         predicate = new NameContainsKeywordsPredicate(Arrays.asList("12345", "alice@email.com", "Main", "Street"));
         assertFalse(predicate.test(new PersonBuilder().withName("Alice").withPhone("12345")
-                .withEmail("alice@email.com").withAddress("Main Street").build()));
+                .withEmail("alice@email.com").withTelegram("@aliceinwonderland").build()));
     }
 }
diff --git a/src/test/java/seedu/address/model/person/PersonTest.java b/src/test/java/seedu/address/model/person/PersonTest.java
index b29c097cfd4..d627ae1da60 100644
--- a/src/test/java/seedu/address/model/person/PersonTest.java
+++ b/src/test/java/seedu/address/model/person/PersonTest.java
@@ -2,11 +2,11 @@
 
 import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertTrue;
-import static seedu.address.logic.commands.CommandTestUtil.VALID_ADDRESS_BOB;
 import static seedu.address.logic.commands.CommandTestUtil.VALID_EMAIL_BOB;
 import static seedu.address.logic.commands.CommandTestUtil.VALID_NAME_BOB;
 import static seedu.address.logic.commands.CommandTestUtil.VALID_PHONE_BOB;
 import static seedu.address.logic.commands.CommandTestUtil.VALID_TAG_HUSBAND;
+import static seedu.address.logic.commands.CommandTestUtil.VALID_TELEGRAM_BOB;
 import static seedu.address.testutil.Assert.assertThrows;
 import static seedu.address.testutil.TypicalPersons.ALICE;
 import static seedu.address.testutil.TypicalPersons.BOB;
@@ -33,7 +33,7 @@ public void isSamePerson() {
 
         // same name, all other attributes different -> returns true
         Person editedAlice = new PersonBuilder(ALICE).withPhone(VALID_PHONE_BOB).withEmail(VALID_EMAIL_BOB)
-                .withAddress(VALID_ADDRESS_BOB).withTags(VALID_TAG_HUSBAND).build();
+                .withTelegram(VALID_TELEGRAM_BOB).withTags(VALID_TAG_HUSBAND).build();
         assertTrue(ALICE.isSamePerson(editedAlice));
 
         // different name, all other attributes same -> returns false
@@ -81,7 +81,7 @@ public void equals() {
         assertFalse(ALICE.equals(editedAlice));
 
         // different address -> returns false
-        editedAlice = new PersonBuilder(ALICE).withAddress(VALID_ADDRESS_BOB).build();
+        editedAlice = new PersonBuilder(ALICE).withTelegram(VALID_TELEGRAM_BOB).build();
         assertFalse(ALICE.equals(editedAlice));
 
         // different tags -> returns false
diff --git a/src/test/java/seedu/address/model/person/TelegramTest.java b/src/test/java/seedu/address/model/person/TelegramTest.java
new file mode 100644
index 00000000000..8d394ba3c15
--- /dev/null
+++ b/src/test/java/seedu/address/model/person/TelegramTest.java
@@ -0,0 +1,37 @@
+package seedu.address.model.person;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static seedu.address.testutil.Assert.assertThrows;
+
+import org.junit.jupiter.api.Test;
+
+public class TelegramTest {
+
+    @Test
+    public void constructor_null_throwsNullPointerException() {
+        assertThrows(NullPointerException.class, () -> new Telegram(null));
+    }
+
+    @Test
+    public void constructor_invalidTelegram_throwsIllegalArgumentException() {
+        String invalidTelegram = "";
+        assertThrows(IllegalArgumentException.class, () -> new Telegram(invalidTelegram));
+    }
+
+    @Test
+    public void isValidTelegram() {
+        // null Telegram
+        assertThrows(NullPointerException.class, () -> Telegram.isValidTelegram(null));
+
+        // invalid telegram handles
+        assertFalse(Telegram.isValidTelegram("")); // empty string
+        assertFalse(Telegram.isValidTelegram(" ")); // spaces only
+
+        // valid telegram handles
+        assertTrue(Telegram.isValidTelegram("@validTelegramHandle"));
+        assertTrue(Telegram.isValidTelegram("i")); // one character
+        assertTrue(Telegram
+                .isValidTelegram("@tttttttttttttttttttttttttttttttttttttttttttttttttttt")); // long telegram handle
+    }
+}
diff --git a/src/test/java/seedu/address/model/person/UniquePersonListTest.java b/src/test/java/seedu/address/model/person/UniquePersonListTest.java
index 1cc5fe9e0fe..f659c21f012 100644
--- a/src/test/java/seedu/address/model/person/UniquePersonListTest.java
+++ b/src/test/java/seedu/address/model/person/UniquePersonListTest.java
@@ -3,8 +3,8 @@
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertTrue;
-import static seedu.address.logic.commands.CommandTestUtil.VALID_ADDRESS_BOB;
 import static seedu.address.logic.commands.CommandTestUtil.VALID_TAG_HUSBAND;
+import static seedu.address.logic.commands.CommandTestUtil.VALID_TELEGRAM_BOB;
 import static seedu.address.testutil.Assert.assertThrows;
 import static seedu.address.testutil.TypicalPersons.ALICE;
 import static seedu.address.testutil.TypicalPersons.BOB;
@@ -42,7 +42,7 @@ public void contains_personInList_returnsTrue() {
     @Test
     public void contains_personWithSameIdentityFieldsInList_returnsTrue() {
         uniquePersonList.add(ALICE);
-        Person editedAlice = new PersonBuilder(ALICE).withAddress(VALID_ADDRESS_BOB).withTags(VALID_TAG_HUSBAND)
+        Person editedAlice = new PersonBuilder(ALICE).withTelegram(VALID_TELEGRAM_BOB).withTags(VALID_TAG_HUSBAND)
                 .build();
         assertTrue(uniquePersonList.contains(editedAlice));
     }
@@ -85,7 +85,7 @@ public void setPerson_editedPersonIsSamePerson_success() {
     @Test
     public void setPerson_editedPersonHasSameIdentity_success() {
         uniquePersonList.add(ALICE);
-        Person editedAlice = new PersonBuilder(ALICE).withAddress(VALID_ADDRESS_BOB).withTags(VALID_TAG_HUSBAND)
+        Person editedAlice = new PersonBuilder(ALICE).withTelegram(VALID_TELEGRAM_BOB).withTags(VALID_TAG_HUSBAND)
                 .build();
         uniquePersonList.setPerson(ALICE, editedAlice);
         UniquePersonList expectedUniquePersonList = new UniquePersonList();
diff --git a/src/test/java/seedu/address/storage/JsonAdaptedPersonTest.java b/src/test/java/seedu/address/storage/JsonAdaptedPersonTest.java
index 83b11331cdb..891026d9f54 100644
--- a/src/test/java/seedu/address/storage/JsonAdaptedPersonTest.java
+++ b/src/test/java/seedu/address/storage/JsonAdaptedPersonTest.java
@@ -12,22 +12,22 @@
 import org.junit.jupiter.api.Test;
 
 import seedu.address.commons.exceptions.IllegalValueException;
-import seedu.address.model.person.Address;
 import seedu.address.model.person.Email;
 import seedu.address.model.person.Name;
 import seedu.address.model.person.Phone;
+import seedu.address.model.person.Telegram;
 
 public class JsonAdaptedPersonTest {
     private static final String INVALID_NAME = "R@chel";
     private static final String INVALID_PHONE = "+651234";
-    private static final String INVALID_ADDRESS = " ";
+    private static final String INVALID_TELEGRAM = " ";
     private static final String INVALID_EMAIL = "example.com";
     private static final String INVALID_TAG = "#friend";
 
     private static final String VALID_NAME = BENSON.getName().toString();
     private static final String VALID_PHONE = BENSON.getPhone().toString();
     private static final String VALID_EMAIL = BENSON.getEmail().toString();
-    private static final String VALID_ADDRESS = BENSON.getAddress().toString();
+    private static final String VALID_TELEGRAM = BENSON.getTelegram().toString();
     private static final List<JsonAdaptedTag> VALID_TAGS = BENSON.getTags().stream()
             .map(JsonAdaptedTag::new)
             .collect(Collectors.toList());
@@ -41,14 +41,14 @@ public void toModelType_validPersonDetails_returnsPerson() throws Exception {
     @Test
     public void toModelType_invalidName_throwsIllegalValueException() {
         JsonAdaptedPerson person =
-                new JsonAdaptedPerson(INVALID_NAME, VALID_PHONE, VALID_EMAIL, VALID_ADDRESS, VALID_TAGS);
+                new JsonAdaptedPerson(INVALID_NAME, VALID_PHONE, VALID_EMAIL, VALID_TELEGRAM, VALID_TAGS);
         String expectedMessage = Name.MESSAGE_CONSTRAINTS;
         assertThrows(IllegalValueException.class, expectedMessage, person::toModelType);
     }
 
     @Test
     public void toModelType_nullName_throwsIllegalValueException() {
-        JsonAdaptedPerson person = new JsonAdaptedPerson(null, VALID_PHONE, VALID_EMAIL, VALID_ADDRESS, VALID_TAGS);
+        JsonAdaptedPerson person = new JsonAdaptedPerson(null, VALID_PHONE, VALID_EMAIL, VALID_TELEGRAM, VALID_TAGS);
         String expectedMessage = String.format(MISSING_FIELD_MESSAGE_FORMAT, Name.class.getSimpleName());
         assertThrows(IllegalValueException.class, expectedMessage, person::toModelType);
     }
@@ -56,14 +56,14 @@ public void toModelType_nullName_throwsIllegalValueException() {
     @Test
     public void toModelType_invalidPhone_throwsIllegalValueException() {
         JsonAdaptedPerson person =
-                new JsonAdaptedPerson(VALID_NAME, INVALID_PHONE, VALID_EMAIL, VALID_ADDRESS, VALID_TAGS);
+                new JsonAdaptedPerson(VALID_NAME, INVALID_PHONE, VALID_EMAIL, VALID_TELEGRAM, VALID_TAGS);
         String expectedMessage = Phone.MESSAGE_CONSTRAINTS;
         assertThrows(IllegalValueException.class, expectedMessage, person::toModelType);
     }
 
     @Test
     public void toModelType_nullPhone_throwsIllegalValueException() {
-        JsonAdaptedPerson person = new JsonAdaptedPerson(VALID_NAME, null, VALID_EMAIL, VALID_ADDRESS, VALID_TAGS);
+        JsonAdaptedPerson person = new JsonAdaptedPerson(VALID_NAME, null, VALID_EMAIL, VALID_TELEGRAM, VALID_TAGS);
         String expectedMessage = String.format(MISSING_FIELD_MESSAGE_FORMAT, Phone.class.getSimpleName());
         assertThrows(IllegalValueException.class, expectedMessage, person::toModelType);
     }
@@ -71,14 +71,14 @@ public void toModelType_nullPhone_throwsIllegalValueException() {
     @Test
     public void toModelType_invalidEmail_throwsIllegalValueException() {
         JsonAdaptedPerson person =
-                new JsonAdaptedPerson(VALID_NAME, VALID_PHONE, INVALID_EMAIL, VALID_ADDRESS, VALID_TAGS);
+                new JsonAdaptedPerson(VALID_NAME, VALID_PHONE, INVALID_EMAIL, VALID_TELEGRAM, VALID_TAGS);
         String expectedMessage = Email.MESSAGE_CONSTRAINTS;
         assertThrows(IllegalValueException.class, expectedMessage, person::toModelType);
     }
 
     @Test
     public void toModelType_nullEmail_throwsIllegalValueException() {
-        JsonAdaptedPerson person = new JsonAdaptedPerson(VALID_NAME, VALID_PHONE, null, VALID_ADDRESS, VALID_TAGS);
+        JsonAdaptedPerson person = new JsonAdaptedPerson(VALID_NAME, VALID_PHONE, null, VALID_TELEGRAM, VALID_TAGS);
         String expectedMessage = String.format(MISSING_FIELD_MESSAGE_FORMAT, Email.class.getSimpleName());
         assertThrows(IllegalValueException.class, expectedMessage, person::toModelType);
     }
@@ -86,15 +86,15 @@ public void toModelType_nullEmail_throwsIllegalValueException() {
     @Test
     public void toModelType_invalidAddress_throwsIllegalValueException() {
         JsonAdaptedPerson person =
-                new JsonAdaptedPerson(VALID_NAME, VALID_PHONE, VALID_EMAIL, INVALID_ADDRESS, VALID_TAGS);
-        String expectedMessage = Address.MESSAGE_CONSTRAINTS;
+                new JsonAdaptedPerson(VALID_NAME, VALID_PHONE, VALID_EMAIL, INVALID_TELEGRAM, VALID_TAGS);
+        String expectedMessage = Telegram.MESSAGE_CONSTRAINTS;
         assertThrows(IllegalValueException.class, expectedMessage, person::toModelType);
     }
 
     @Test
     public void toModelType_nullAddress_throwsIllegalValueException() {
         JsonAdaptedPerson person = new JsonAdaptedPerson(VALID_NAME, VALID_PHONE, VALID_EMAIL, null, VALID_TAGS);
-        String expectedMessage = String.format(MISSING_FIELD_MESSAGE_FORMAT, Address.class.getSimpleName());
+        String expectedMessage = String.format(MISSING_FIELD_MESSAGE_FORMAT, Telegram.class.getSimpleName());
         assertThrows(IllegalValueException.class, expectedMessage, person::toModelType);
     }
 
@@ -103,7 +103,7 @@ public void toModelType_invalidTags_throwsIllegalValueException() {
         List<JsonAdaptedTag> invalidTags = new ArrayList<>(VALID_TAGS);
         invalidTags.add(new JsonAdaptedTag(INVALID_TAG));
         JsonAdaptedPerson person =
-                new JsonAdaptedPerson(VALID_NAME, VALID_PHONE, VALID_EMAIL, VALID_ADDRESS, invalidTags);
+                new JsonAdaptedPerson(VALID_NAME, VALID_PHONE, VALID_EMAIL, VALID_TELEGRAM, invalidTags);
         assertThrows(IllegalValueException.class, person::toModelType);
     }
 
diff --git a/src/test/java/seedu/address/testutil/EditPersonDescriptorBuilder.java b/src/test/java/seedu/address/testutil/EditPersonDescriptorBuilder.java
index 4584bd5044e..8e3165db784 100644
--- a/src/test/java/seedu/address/testutil/EditPersonDescriptorBuilder.java
+++ b/src/test/java/seedu/address/testutil/EditPersonDescriptorBuilder.java
@@ -5,11 +5,11 @@
 import java.util.stream.Stream;
 
 import seedu.address.logic.commands.EditCommand.EditPersonDescriptor;
-import seedu.address.model.person.Address;
 import seedu.address.model.person.Email;
 import seedu.address.model.person.Name;
 import seedu.address.model.person.Person;
 import seedu.address.model.person.Phone;
+import seedu.address.model.person.Telegram;
 import seedu.address.model.tag.Tag;
 
 /**
@@ -35,7 +35,7 @@ public EditPersonDescriptorBuilder(Person person) {
         descriptor.setName(person.getName());
         descriptor.setPhone(person.getPhone());
         descriptor.setEmail(person.getEmail());
-        descriptor.setAddress(person.getAddress());
+        descriptor.setTelegram(person.getTelegram());
         descriptor.setTags(person.getTags());
     }
 
@@ -64,10 +64,10 @@ public EditPersonDescriptorBuilder withEmail(String email) {
     }
 
     /**
-     * Sets the {@code Address} of the {@code EditPersonDescriptor} that we are building.
+     * Sets the {@code Telegram} of the {@code EditPersonDescriptor} that we are building.
      */
-    public EditPersonDescriptorBuilder withAddress(String address) {
-        descriptor.setAddress(new Address(address));
+    public EditPersonDescriptorBuilder withTelegram(String telegram) {
+        descriptor.setTelegram(new Telegram(telegram));
         return this;
     }
 
diff --git a/src/test/java/seedu/address/testutil/PersonBuilder.java b/src/test/java/seedu/address/testutil/PersonBuilder.java
index 6be381d39ba..71cfb4e90b0 100644
--- a/src/test/java/seedu/address/testutil/PersonBuilder.java
+++ b/src/test/java/seedu/address/testutil/PersonBuilder.java
@@ -3,11 +3,11 @@
 import java.util.HashSet;
 import java.util.Set;
 
-import seedu.address.model.person.Address;
 import seedu.address.model.person.Email;
 import seedu.address.model.person.Name;
 import seedu.address.model.person.Person;
 import seedu.address.model.person.Phone;
+import seedu.address.model.person.Telegram;
 import seedu.address.model.tag.Tag;
 import seedu.address.model.util.SampleDataUtil;
 
@@ -19,12 +19,12 @@ public class PersonBuilder {
     public static final String DEFAULT_NAME = "Amy Bee";
     public static final String DEFAULT_PHONE = "85355255";
     public static final String DEFAULT_EMAIL = "amy@gmail.com";
-    public static final String DEFAULT_ADDRESS = "123, Jurong West Ave 6, #08-111";
+    public static final String DEFAULT_TELEGRAM = "@amyamyamy";
 
     private Name name;
     private Phone phone;
     private Email email;
-    private Address address;
+    private Telegram telegram;
     private Set<Tag> tags;
 
     /**
@@ -34,7 +34,7 @@ public PersonBuilder() {
         name = new Name(DEFAULT_NAME);
         phone = new Phone(DEFAULT_PHONE);
         email = new Email(DEFAULT_EMAIL);
-        address = new Address(DEFAULT_ADDRESS);
+        telegram = new Telegram(DEFAULT_TELEGRAM);
         tags = new HashSet<>();
     }
 
@@ -45,7 +45,7 @@ public PersonBuilder(Person personToCopy) {
         name = personToCopy.getName();
         phone = personToCopy.getPhone();
         email = personToCopy.getEmail();
-        address = personToCopy.getAddress();
+        telegram = personToCopy.getTelegram();
         tags = new HashSet<>(personToCopy.getTags());
     }
 
@@ -66,10 +66,10 @@ public PersonBuilder withTags(String ... tags) {
     }
 
     /**
-     * Sets the {@code Address} of the {@code Person} that we are building.
+     * Sets the {@code Telegram} of the {@code Person} that we are building.
      */
-    public PersonBuilder withAddress(String address) {
-        this.address = new Address(address);
+    public PersonBuilder withTelegram(String telegram) {
+        this.telegram = new Telegram(telegram);
         return this;
     }
 
@@ -90,7 +90,7 @@ public PersonBuilder withEmail(String email) {
     }
 
     public Person build() {
-        return new Person(name, phone, email, address, tags);
+        return new Person(name, phone, email, telegram, tags);
     }
 
 }
diff --git a/src/test/java/seedu/address/testutil/PersonUtil.java b/src/test/java/seedu/address/testutil/PersonUtil.java
index 90849945183..75a76e08709 100644
--- a/src/test/java/seedu/address/testutil/PersonUtil.java
+++ b/src/test/java/seedu/address/testutil/PersonUtil.java
@@ -1,10 +1,10 @@
 package seedu.address.testutil;
 
-import static seedu.address.logic.parser.CliSyntax.PREFIX_ADDRESS;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_EMAIL;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_NAME;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_PHONE;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_TAG;
+import static seedu.address.logic.parser.CliSyntax.PREFIX_TELEGRAM;
 
 import java.util.Set;
 
@@ -33,7 +33,7 @@ public static String getPersonDetails(Person person) {
         sb.append(PREFIX_NAME + person.getName().fullName + " ");
         sb.append(PREFIX_PHONE + person.getPhone().value + " ");
         sb.append(PREFIX_EMAIL + person.getEmail().value + " ");
-        sb.append(PREFIX_ADDRESS + person.getAddress().value + " ");
+        sb.append(PREFIX_TELEGRAM + person.getTelegram().value + " ");
         person.getTags().stream().forEach(
             s -> sb.append(PREFIX_TAG + s.tagName + " ")
         );
@@ -48,7 +48,7 @@ public static String getEditPersonDescriptorDetails(EditPersonDescriptor descrip
         descriptor.getName().ifPresent(name -> sb.append(PREFIX_NAME).append(name.fullName).append(" "));
         descriptor.getPhone().ifPresent(phone -> sb.append(PREFIX_PHONE).append(phone.value).append(" "));
         descriptor.getEmail().ifPresent(email -> sb.append(PREFIX_EMAIL).append(email.value).append(" "));
-        descriptor.getAddress().ifPresent(address -> sb.append(PREFIX_ADDRESS).append(address.value).append(" "));
+        descriptor.getTelegram().ifPresent(telegram -> sb.append(PREFIX_TELEGRAM).append(telegram.value).append(" "));
         if (descriptor.getTags().isPresent()) {
             Set<Tag> tags = descriptor.getTags().get();
             if (tags.isEmpty()) {
diff --git a/src/test/java/seedu/address/testutil/TypicalPersons.java b/src/test/java/seedu/address/testutil/TypicalPersons.java
index fec76fb7129..2a009a5578a 100644
--- a/src/test/java/seedu/address/testutil/TypicalPersons.java
+++ b/src/test/java/seedu/address/testutil/TypicalPersons.java
@@ -1,7 +1,5 @@
 package seedu.address.testutil;
 
-import static seedu.address.logic.commands.CommandTestUtil.VALID_ADDRESS_AMY;
-import static seedu.address.logic.commands.CommandTestUtil.VALID_ADDRESS_BOB;
 import static seedu.address.logic.commands.CommandTestUtil.VALID_EMAIL_AMY;
 import static seedu.address.logic.commands.CommandTestUtil.VALID_EMAIL_BOB;
 import static seedu.address.logic.commands.CommandTestUtil.VALID_NAME_AMY;
@@ -10,6 +8,8 @@
 import static seedu.address.logic.commands.CommandTestUtil.VALID_PHONE_BOB;
 import static seedu.address.logic.commands.CommandTestUtil.VALID_TAG_FRIEND;
 import static seedu.address.logic.commands.CommandTestUtil.VALID_TAG_HUSBAND;
+import static seedu.address.logic.commands.CommandTestUtil.VALID_TELEGRAM_AMY;
+import static seedu.address.logic.commands.CommandTestUtil.VALID_TELEGRAM_BOB;
 
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -24,35 +24,35 @@
 public class TypicalPersons {
 
     public static final Person ALICE = new PersonBuilder().withName("Alice Pauline")
-            .withAddress("123, Jurong West Ave 6, #08-111").withEmail("alice@example.com")
+            .withTelegram("@aliceinwonderland").withEmail("alice@example.com")
             .withPhone("94351253")
             .withTags("friends").build();
     public static final Person BENSON = new PersonBuilder().withName("Benson Meier")
-            .withAddress("311, Clementi Ave 2, #02-25")
+            .withTelegram("sonben")
             .withEmail("johnd@example.com").withPhone("98765432")
             .withTags("owesMoney", "friends").build();
     public static final Person CARL = new PersonBuilder().withName("Carl Kurz").withPhone("95352563")
-            .withEmail("heinz@example.com").withAddress("wall street").build();
+            .withEmail("heinz@example.com").withTelegram("@caaarl").build();
     public static final Person DANIEL = new PersonBuilder().withName("Daniel Meier").withPhone("87652533")
-            .withEmail("cornelia@example.com").withAddress("10th street").withTags("friends").build();
+            .withEmail("cornelia@example.com").withTelegram("dannyyyyy").withTags("friends").build();
     public static final Person ELLE = new PersonBuilder().withName("Elle Meyer").withPhone("9482224")
-            .withEmail("werner@example.com").withAddress("michegan ave").build();
+            .withEmail("werner@example.com").withTelegram("theletterl").build();
     public static final Person FIONA = new PersonBuilder().withName("Fiona Kunz").withPhone("9482427")
-            .withEmail("lydia@example.com").withAddress("little tokyo").build();
+            .withEmail("lydia@example.com").withTelegram("princessshrek").build();
     public static final Person GEORGE = new PersonBuilder().withName("George Best").withPhone("9482442")
-            .withEmail("anna@example.com").withAddress("4th street").build();
+            .withEmail("anna@example.com").withTelegram("georgebestest").build();
 
     // Manually added
     public static final Person HOON = new PersonBuilder().withName("Hoon Meier").withPhone("8482424")
-            .withEmail("stefan@example.com").withAddress("little india").build();
+            .withEmail("stefan@example.com").withTelegram("hoonoon").build();
     public static final Person IDA = new PersonBuilder().withName("Ida Mueller").withPhone("8482131")
-            .withEmail("hans@example.com").withAddress("chicago ave").build();
+            .withEmail("hans@example.com").withTelegram("idaidaida").build();
 
     // Manually added - Person's details found in {@code CommandTestUtil}
     public static final Person AMY = new PersonBuilder().withName(VALID_NAME_AMY).withPhone(VALID_PHONE_AMY)
-            .withEmail(VALID_EMAIL_AMY).withAddress(VALID_ADDRESS_AMY).withTags(VALID_TAG_FRIEND).build();
+            .withEmail(VALID_EMAIL_AMY).withTelegram(VALID_TELEGRAM_AMY).withTags(VALID_TAG_FRIEND).build();
     public static final Person BOB = new PersonBuilder().withName(VALID_NAME_BOB).withPhone(VALID_PHONE_BOB)
-            .withEmail(VALID_EMAIL_BOB).withAddress(VALID_ADDRESS_BOB).withTags(VALID_TAG_HUSBAND, VALID_TAG_FRIEND)
+            .withEmail(VALID_EMAIL_BOB).withTelegram(VALID_TELEGRAM_BOB).withTags(VALID_TAG_HUSBAND, VALID_TAG_FRIEND)
             .build();
 
     public static final String KEYWORD_MATCHING_MEIER = "Meier"; // A keyword that matches MEIER