diff --git a/apps/OboeTester/app/src/main/java/com/mobileer/oboetester/BaseAutoGlitchActivity.java b/apps/OboeTester/app/src/main/java/com/mobileer/oboetester/BaseAutoGlitchActivity.java
index e19b5eff4..0c462a68c 100644
--- a/apps/OboeTester/app/src/main/java/com/mobileer/oboetester/BaseAutoGlitchActivity.java
+++ b/apps/OboeTester/app/src/main/java/com/mobileer/oboetester/BaseAutoGlitchActivity.java
@@ -80,6 +80,7 @@ private static class TestStreamOptions {
         public final int mmapUsed;
         public final int performanceMode;
         public final int sharingMode;
+        public final int sessionId;
 
         public TestStreamOptions(StreamConfiguration configuration, int channelUsed) {
             this.channelUsed = channelUsed;
@@ -89,6 +90,7 @@ public TestStreamOptions(StreamConfiguration configuration, int channelUsed) {
             mmapUsed = configuration.isMMap() ? 1 : 0;
             performanceMode = configuration.getPerformanceMode();
             sharingMode = configuration.getSharingMode();
+            sessionId = configuration.getSessionId();
         }
 
         int countDifferences(TestStreamOptions other) {
@@ -100,6 +102,7 @@ int countDifferences(TestStreamOptions other) {
             count += (mmapUsed != other.mmapUsed) ? 1 : 0;
             count += (performanceMode != other.performanceMode) ? 1 : 0;
             count += (sharingMode != other.sharingMode) ? 1 : 0;
+            count += (sessionId != other.sessionId) ? 1 : 0;
             return count;
         }
 
@@ -112,6 +115,7 @@ public String comparePassedDirection(String prefix, TestStreamOptions passed) {
             text.append(TestDataPathsActivity.comparePassedField(prefix,this, passed, "mmapUsed"));
             text.append(TestDataPathsActivity.comparePassedField(prefix,this, passed, "performanceMode"));
             text.append(TestDataPathsActivity.comparePassedField(prefix,this, passed, "sharingMode"));
+            text.append(TestDataPathsActivity.comparePassedField(prefix,this, passed, "sessionId"));
             return text.toString();
         }
         @Override
@@ -236,6 +240,7 @@ protected String getConfigText(StreamConfiguration config) {
                 + ", ID = " + String.format(Locale.getDefault(), "%2d", config.getDeviceId())
                 + ", Perf = " + StreamConfiguration.convertPerformanceModeToText(
                         config.getPerformanceMode())
+                + ((config.getSessionId() > 0) ? (", sessionId = " + config.getSessionId()) : "")
                 + ",\n     ch = " + channelText(channel, config.getChannelCount())
                 + ", cm = " + convertChannelMaskToText(config.getChannelMask());
     }
diff --git a/apps/OboeTester/app/src/main/java/com/mobileer/oboetester/TestDataPathsActivity.java b/apps/OboeTester/app/src/main/java/com/mobileer/oboetester/TestDataPathsActivity.java
index bfe4b83df..f0936ecad 100644
--- a/apps/OboeTester/app/src/main/java/com/mobileer/oboetester/TestDataPathsActivity.java
+++ b/apps/OboeTester/app/src/main/java/com/mobileer/oboetester/TestDataPathsActivity.java
@@ -17,6 +17,7 @@
 package com.mobileer.oboetester;
 
 import static com.mobileer.oboetester.IntentBasedTestSupport.configureStreamsFromBundle;
+import static com.mobileer.oboetester.StreamConfiguration.UNSPECIFIED;
 import static com.mobileer.oboetester.StreamConfiguration.convertChannelMaskToText;
 
 import android.app.Instrumentation;
@@ -37,6 +38,8 @@
 
 import java.lang.reflect.Field;
 import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
 import java.util.Locale;
 
 /**
@@ -572,6 +575,8 @@ private void testDeviceOutputInfo(AudioDeviceInfo outputDeviceInfo)  throws Inte
          requestedOutConfig.setDeviceId(outputDeviceInfo.getId());
          resetChannelConfigurations(requestedInConfig, requestedOutConfig);
 
+         testBug_270535408(inputDeviceInfo, outputDeviceInfo);
+
          if (mCheckBoxAllChannels.isChecked()) {
              runOnUiThread(() -> mCheckBoxAllChannels.setEnabled(false));
              testOutputChannelCounts(inputDeviceInfo, outputDeviceInfo);
@@ -695,7 +700,7 @@ public static int findLargestInt(int[] arr) {
 
     private void testOutputChannelCounts(AudioDeviceInfo inputDeviceInfo, AudioDeviceInfo outputDeviceInfo) throws InterruptedException {
         logSection("Output Channel Counts");
-        ArrayList<Integer> channelCountsTested =new ArrayList<Integer>();
+        ArrayList<Integer> channelCountsTested = new ArrayList<Integer>();
         StreamConfiguration requestedInConfig = mAudioInputTester.requestedConfiguration;
         StreamConfiguration requestedOutConfig = mAudioOutTester.requestedConfiguration;
 
@@ -767,6 +772,26 @@ private void testMatchingChannels(int numChannels) throws InterruptedException {
         }
     }
 
+    // b/270535408 | no input when channels=3 and sessionId is allocated
+    private void testBug_270535408(AudioDeviceInfo inputDeviceInfo,
+                                   AudioDeviceInfo outputDeviceInfo) throws InterruptedException {
+        int[] inputChannelCounts = inputDeviceInfo.getChannelCounts();
+        if (findLargestChannelCount(inputChannelCounts) >= 3) {
+            logSection("Bug 270535408, 3ch + SessionId");
+            StreamConfiguration requestedInConfig = mAudioInputTester.requestedConfiguration;
+            StreamConfiguration requestedOutConfig = mAudioOutTester.requestedConfiguration;
+            requestedInConfig.setChannelCount(3);
+            requestedInConfig.setSessionId(AudioManager.AUDIO_SESSION_ID_GENERATE);
+            requestedInConfig.setPerformanceMode(StreamConfiguration.PERFORMANCE_MODE_LOW_LATENCY);
+            requestedOutConfig.setPerformanceMode(StreamConfiguration.PERFORMANCE_MODE_LOW_LATENCY);
+            testCurrentConfigurations();
+            // Now test without a sessionId so we have a passing test to compare with.
+            requestedInConfig.setSessionId(-1); // AAUDIO_SESSION_ID_NONE
+            testCurrentConfigurations();
+            requestedInConfig.setChannelCount(UNSPECIFIED);
+        }
+    }
+
     private void testPerformancePaths() throws InterruptedException {
         StreamConfiguration requestedInConfig = mAudioInputTester.requestedConfiguration;
         StreamConfiguration requestedOutConfig = mAudioOutTester.requestedConfiguration;