diff --git a/core/lib/Session.ts b/core/lib/Session.ts
index c30d840c5..03fac303b 100644
--- a/core/lib/Session.ts
+++ b/core/lib/Session.ts
@@ -563,6 +563,13 @@ export default class Session
       userAgentSelector: userAgent ?? userProfile?.userAgentString,
     };
 
+    if (userProfile) {
+      options.locale ??= userProfile.locale;
+      options.timezoneId ??= userProfile.timezoneId;
+      options.geolocation ??= userProfile.geolocation;
+      options.viewport ??= userProfile.deviceProfile?.viewport;
+    }
+
     this.agent = this.core.pool.createAgent({
       options,
       customEmulatorConfig,
@@ -570,6 +577,7 @@ export default class Session
       deviceProfile: userProfile?.deviceProfile,
       id: this.id,
       commandMarker: this.commands,
+      userAgentOption: userProfile?.userAgent,
     });
 
     this.plugins = new CorePlugins(
diff --git a/core/lib/UserProfile.ts b/core/lib/UserProfile.ts
index c1129b106..73454667f 100644
--- a/core/lib/UserProfile.ts
+++ b/core/lib/UserProfile.ts
@@ -54,12 +54,16 @@ export default class UserProfile {
       }
     }
 
-    return {
+    return <IUserProfile>{
       cookies,
       storage: exportedStorage,
+      geolocation: session.emulationProfile.geolocation,
+      locale: session.emulationProfile.locale,
+      timezoneId: session.emulationProfile.timezoneId,
+      userAgent: session.emulationProfile.userAgentOption,
       userAgentString: session.emulationProfile.userAgentOption.string,
       deviceProfile: session.emulationProfile.deviceProfile,
-    } as IUserProfile;
+    };
   }
 
   public static async installCookies(session: Session): Promise<UserProfile> {
diff --git a/interfaces/IUserProfile.ts b/interfaces/IUserProfile.ts
index 019cd601d..2626f6d15 100644
--- a/interfaces/IUserProfile.ts
+++ b/interfaces/IUserProfile.ts
@@ -1,10 +1,17 @@
-import { ICookie } from '@ulixee/unblocked-specification/agent/net/ICookie';
 import IDomStorage from '@ulixee/unblocked-specification/agent/browser/IDomStorage';
+import { ICookie } from '@ulixee/unblocked-specification/agent/net/ICookie';
 import IDeviceProfile from '@ulixee/unblocked-specification/plugin/IDeviceProfile';
+import IGeolocation from '@ulixee/unblocked-specification/plugin/IGeolocation';
+import IUserAgentOption from '@ulixee/unblocked-specification/plugin/IUserAgentOption';
 
 export default interface IUserProfile {
   cookies?: ICookie[];
   storage?: IDomStorage;
   userAgentString?: string;
+  userAgent?: IUserAgentOption;
+  // need actual user agent details...
+  timezoneId?: string;
+  locale?: string;
+  geolocation?: IGeolocation;
   deviceProfile?: IDeviceProfile;
 }