diff --git a/Android.bp b/Android.bp
index 0d1c81d..65e4402 100644
--- a/Android.bp
+++ b/Android.bp
@@ -31,6 +31,7 @@
         "androidx.annotation_annotation",
         "androidx.core_core",
         "telecom_flags_core_java_lib",
+        "modules-utils-handlerexecutor",
     ],
     resource_dirs: ["res"],
     proto: {
diff --git a/flags/telecom_callaudioroutestatemachine_flags.aconfig b/flags/telecom_callaudioroutestatemachine_flags.aconfig
index 62b8bdb..3dd5c9d 100644
--- a/flags/telecom_callaudioroutestatemachine_flags.aconfig
+++ b/flags/telecom_callaudioroutestatemachine_flags.aconfig
@@ -107,3 +107,14 @@
     purpose: PURPOSE_BUGFIX
   }
 }
+
+# OWNER=pmadapurmath TARGET=25Q1
+flag {
+  name: "new_audio_path_speaker_broadcast_and_unfocused_routing"
+  namespace: "telecom"
+  description: "Replace the speaker broadcasts with the communication device changed listener and resolve baseline routing issues when a call ends."
+  bug: "353419513"
+  metadata {
+    purpose: PURPOSE_BUGFIX
+  }
+}
diff --git a/src/com/android/server/telecom/AudioRoute.java b/src/com/android/server/telecom/AudioRoute.java
index 6dc64ba..d3ed77d 100644
--- a/src/com/android/server/telecom/AudioRoute.java
+++ b/src/com/android/server/telecom/AudioRoute.java
@@ -318,7 +318,8 @@
     // sending SPEAKER_OFF, or disconnecting SCO).
     void onOrigRouteAsPendingRoute(boolean active, PendingAudioRoute pendingAudioRoute,
             AudioManager audioManager, BluetoothRouteManager bluetoothRouteManager) {
-        Log.i(this, "onOrigRouteAsPendingRoute: active (%b), type (%d)", active, mAudioRouteType);
+        Log.i(this, "onOrigRouteAsPendingRoute: active (%b), type (%s)", active,
+                DEVICE_TYPE_STRINGS.get(mAudioRouteType));
         if (active) {
             int result = clearCommunicationDevice(pendingAudioRoute, bluetoothRouteManager,
                     audioManager);
diff --git a/src/com/android/server/telecom/CallAudioModeStateMachine.java b/src/com/android/server/telecom/CallAudioModeStateMachine.java
index fb196f2..e149bdd 100644
--- a/src/com/android/server/telecom/CallAudioModeStateMachine.java
+++ b/src/com/android/server/telecom/CallAudioModeStateMachine.java
@@ -17,7 +17,6 @@
 package com.android.server.telecom;
 
 import android.media.AudioAttributes;
-import android.media.AudioFocusRequest;
 import android.media.AudioManager;
 import android.os.Looper;
 import android.os.Message;
@@ -47,22 +46,6 @@
         }
     }
 
-    private static final AudioAttributes RING_AUDIO_ATTRIBUTES = new AudioAttributes.Builder()
-            .setUsage(AudioAttributes.USAGE_NOTIFICATION_RINGTONE)
-            .setLegacyStreamType(AudioManager.STREAM_RING)
-            .build();
-    public static final AudioFocusRequest RING_AUDIO_FOCUS_REQUEST = new AudioFocusRequest
-            .Builder(AudioManager.AUDIOFOCUS_GAIN_TRANSIENT)
-            .setAudioAttributes(RING_AUDIO_ATTRIBUTES).build();
-
-    private static final AudioAttributes CALL_AUDIO_ATTRIBUTES = new AudioAttributes.Builder()
-            .setUsage(AudioAttributes.USAGE_VOICE_COMMUNICATION)
-            .setLegacyStreamType(AudioManager.STREAM_VOICE_CALL)
-            .build();
-    public static final AudioFocusRequest CALL_AUDIO_FOCUS_REQUEST = new AudioFocusRequest
-            .Builder(AudioManager.AUDIOFOCUS_GAIN_TRANSIENT)
-            .setAudioAttributes(CALL_AUDIO_ATTRIBUTES).build();
-
     public static class MessageArgs {
         public boolean hasActiveOrDialingCalls;
         public boolean hasRingingCalls;
@@ -232,8 +215,6 @@
     public static final String STREAMING_STATE_NAME = StreamingFocusState.class.getSimpleName();
     public static final String COMMS_STATE_NAME = VoipCallFocusState.class.getSimpleName();
 
-    private AudioFocusRequest mCurrentAudioFocusRequest = null;
-
     private class BaseState extends State {
         @Override
         public boolean processMessage(Message msg) {
@@ -348,18 +329,9 @@
                             + args.toString());
                     return HANDLED;
                 case AUDIO_OPERATIONS_COMPLETE:
-                    if (mFeatureFlags.telecomResolveHiddenDependencies()) {
-                        if (mCurrentAudioFocusRequest != null) {
-                            Log.i(this, "AudioOperationsComplete: "
-                                    + "AudioManager#abandonAudioFocusRequest(); now unfocused");
-                            mAudioManager.abandonAudioFocusRequest(mCurrentAudioFocusRequest);
-                            mCurrentAudioFocusRequest = null;
-                        } else {
-                            Log.i(this, "AudioOperationsComplete: already unfocused");
-                        }
-                    } else {
-                        mAudioManager.abandonAudioFocusForCall();
-                    }
+                    Log.i(this, "AudioOperationsComplete: "
+                            + "AudioManager#abandonAudioFocusRequest(); now unfocused");
+                    mAudioManager.abandonAudioFocusForCall();
                     // Clear requested communication device after the call ends.
                     if (mFeatureFlags.clearCommunicationDeviceAfterAudioOpsComplete()) {
                         mCommunicationDeviceTracker.clearCommunicationDevice(
@@ -438,14 +410,7 @@
                 case AUDIO_OPERATIONS_COMPLETE:
                     Log.i(LOG_TAG, "AudioManager#abandonAudioFocusRequest: now "
                             + "AUDIO_PROCESSING");
-                    if (mFeatureFlags.telecomResolveHiddenDependencies()) {
-                        if (mCurrentAudioFocusRequest != null) {
-                            mAudioManager.abandonAudioFocusRequest(mCurrentAudioFocusRequest);
-                            mCurrentAudioFocusRequest = null;
-                        }
-                    } else {
-                        mAudioManager.abandonAudioFocusForCall();
-                    }
+                    mAudioManager.abandonAudioFocusForCall();
                     return HANDLED;
                 default:
                     // The forced focus switch commands are handled by BaseState.
@@ -468,14 +433,10 @@
             }
 
             if (mCallAudioManager.startRinging()) {
-                if (mFeatureFlags.telecomResolveHiddenDependencies()) {
-                    mCurrentAudioFocusRequest = RING_AUDIO_FOCUS_REQUEST;
-                    Log.i(this, "tryStartRinging: AudioManager#requestAudioFocus(RING)");
-                    mAudioManager.requestAudioFocus(RING_AUDIO_FOCUS_REQUEST);
-                } else {
-                    mAudioManager.requestAudioFocusForCall(
-                            AudioManager.STREAM_RING, AudioManager.AUDIOFOCUS_GAIN_TRANSIENT);
-                }
+                Log.i(this, "tryStartRinging: AudioManager#requestAudioFocus(RING)");
+                mAudioManager.requestAudioFocusForCall(
+                        AudioManager.STREAM_RING, AudioManager.AUDIOFOCUS_GAIN_TRANSIENT);
+
                 // Do not set MODE_RINGTONE if we were previously in the CALL_SCREENING mode --
                 // this trips up the audio system.
                 if (mAudioManager.getMode() != AudioManager.MODE_CALL_SCREENING) {
@@ -570,14 +531,9 @@
         public void enter() {
             Log.i(LOG_TAG, "Audio focus entering SIM CALL state");
             mLocalLog.log("Enter SIM_CALL");
-            if (mFeatureFlags.telecomResolveHiddenDependencies()) {
-                mCurrentAudioFocusRequest = CALL_AUDIO_FOCUS_REQUEST;
-                Log.i(this, "enter: AudioManager#requestAudioFocus(CALL)");
-                mAudioManager.requestAudioFocus(CALL_AUDIO_FOCUS_REQUEST);
-            } else {
-                mAudioManager.requestAudioFocusForCall(AudioManager.STREAM_VOICE_CALL,
-                        AudioManager.AUDIOFOCUS_GAIN_TRANSIENT);
-            }
+            Log.i(this, "enter: AudioManager#requestAudioFocus(CALL)");
+            mAudioManager.requestAudioFocusForCall(AudioManager.STREAM_VOICE_CALL,
+                AudioManager.AUDIOFOCUS_GAIN_TRANSIENT);
             Log.i(this, "enter: AudioManager#setMode(MODE_IN_CALL)");
             mAudioManager.setMode(AudioManager.MODE_IN_CALL);
             mLocalLog.log("Mode MODE_IN_CALL");
@@ -660,14 +616,9 @@
         public void enter() {
             Log.i(LOG_TAG, "Audio focus entering VOIP CALL state");
             mLocalLog.log("Enter VOIP_CALL");
-            if (mFeatureFlags.telecomResolveHiddenDependencies()) {
-                mCurrentAudioFocusRequest = CALL_AUDIO_FOCUS_REQUEST;
-                Log.i(this, "enter: AudioManager#requestAudioFocus(CALL)");
-                mAudioManager.requestAudioFocus(CALL_AUDIO_FOCUS_REQUEST);
-            } else {
-                mAudioManager.requestAudioFocusForCall(AudioManager.STREAM_VOICE_CALL,
-                        AudioManager.AUDIOFOCUS_GAIN_TRANSIENT);
-            }
+            Log.i(this, "enter: AudioManager#requestAudioFocus(CALL)");
+            mAudioManager.requestAudioFocusForCall(AudioManager.STREAM_VOICE_CALL,
+                    AudioManager.AUDIOFOCUS_GAIN_TRANSIENT);
             Log.i(this, "enter: AudioManager#setMode(MODE_IN_COMMUNICATION)");
             mAudioManager.setMode(AudioManager.MODE_IN_COMMUNICATION);
             mLocalLog.log("Mode MODE_IN_COMMUNICATION");
@@ -823,14 +774,9 @@
         public void enter() {
             Log.i(LOG_TAG, "Audio focus entering TONE/HOLDING state");
             mLocalLog.log("Enter TONE/HOLDING");
-            if (mFeatureFlags.telecomResolveHiddenDependencies()) {
-                mCurrentAudioFocusRequest = CALL_AUDIO_FOCUS_REQUEST;
-                Log.i(this, "enter: AudioManager#requestAudioFocus(CALL)");
-                mAudioManager.requestAudioFocus(CALL_AUDIO_FOCUS_REQUEST);
-            } else {
-                mAudioManager.requestAudioFocusForCall(AudioManager.STREAM_VOICE_CALL,
-                        AudioManager.AUDIOFOCUS_GAIN_TRANSIENT);
-            }
+            Log.i(this, "enter: AudioManager#requestAudioFocus(CALL)");
+            mAudioManager.requestAudioFocusForCall(AudioManager.STREAM_VOICE_CALL,
+                    AudioManager.AUDIOFOCUS_GAIN_TRANSIENT);
             Log.i(this, "enter: AudioManager#setMode(%d)", mMostRecentMode);
             mAudioManager.setMode(mMostRecentMode);
             mLocalLog.log("Mode " + mMostRecentMode);
diff --git a/src/com/android/server/telecom/CallAudioRouteController.java b/src/com/android/server/telecom/CallAudioRouteController.java
index 7422286..12d108f 100644
--- a/src/com/android/server/telecom/CallAudioRouteController.java
+++ b/src/com/android/server/telecom/CallAudioRouteController.java
@@ -17,6 +17,7 @@
 package com.android.server.telecom;
 
 import static com.android.server.telecom.AudioRoute.BT_AUDIO_ROUTE_TYPES;
+import static com.android.server.telecom.AudioRoute.DEVICE_INFO_TYPE_TO_AUDIO_ROUTE_TYPE;
 import static com.android.server.telecom.AudioRoute.TYPE_INVALID;
 import static com.android.server.telecom.AudioRoute.TYPE_SPEAKER;
 
@@ -63,6 +64,8 @@
 import java.util.Map;
 import java.util.Objects;
 import java.util.Set;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
 
 public class CallAudioRouteController implements CallAudioRouteAdapter {
     private static final AudioRoute DUMMY_ROUTE = new AudioRoute(TYPE_INVALID, null, null);
@@ -107,6 +110,8 @@
     private PendingAudioRoute mPendingAudioRoute;
     private AudioRoute.Factory mAudioRouteFactory;
     private StatusBarNotifier mStatusBarNotifier;
+    private AudioManager.OnCommunicationDeviceChangedListener mCommunicationDeviceListener;
+    private ExecutorService mCommunicationDeviceChangedExecutor;
     private FeatureFlags mFeatureFlags;
     private int mFocusType;
     private int mCallSupportedRouteMask = -1;
@@ -200,10 +205,12 @@
         handlerThread.start();
 
         // Register broadcast receivers
-        IntentFilter speakerChangedFilter = new IntentFilter(
-                AudioManager.ACTION_SPEAKERPHONE_STATE_CHANGED);
-        speakerChangedFilter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY);
-        context.registerReceiver(mSpeakerPhoneChangeReceiver, speakerChangedFilter);
+        if (!mFeatureFlags.newAudioPathSpeakerBroadcastAndUnfocusedRouting()) {
+            IntentFilter speakerChangedFilter = new IntentFilter(
+                    AudioManager.ACTION_SPEAKERPHONE_STATE_CHANGED);
+            speakerChangedFilter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY);
+            context.registerReceiver(mSpeakerPhoneChangeReceiver, speakerChangedFilter);
+        }
 
         IntentFilter micMuteChangedFilter = new IntentFilter(
                 AudioManager.ACTION_MICROPHONE_MUTE_CHANGED);
@@ -214,6 +221,27 @@
         muteChangedFilter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY);
         context.registerReceiver(mMuteChangeReceiver, muteChangedFilter);
 
+        // Register AudioManager#onCommunicationDeviceChangedListener listener to receive updates
+        // to communication device (via AudioManager#setCommunicationDevice). This is a replacement
+        // to using broadcasts in the hopes of improving performance.
+        mCommunicationDeviceChangedExecutor = Executors.newSingleThreadExecutor();
+        mCommunicationDeviceListener = new AudioManager.OnCommunicationDeviceChangedListener() {
+            @Override
+            public void onCommunicationDeviceChanged(AudioDeviceInfo device) {
+                @AudioRoute.AudioRouteType int audioType = device != null
+                        ? DEVICE_INFO_TYPE_TO_AUDIO_ROUTE_TYPE.get(device.getType())
+                        : TYPE_INVALID;
+                Log.i(this, "onCommunicationDeviceChanged: %d", audioType);
+                if (device != null && device.getType() == AudioDeviceInfo.TYPE_BUILTIN_SPEAKER) {
+                    if (mCurrentRoute.getType() != TYPE_SPEAKER) {
+                        sendMessageWithSessionInfo(SPEAKER_ON);
+                    }
+                } else {
+                    sendMessageWithSessionInfo(SPEAKER_OFF);
+                }
+            }
+        };
+
         // Create handler
         mHandler = new Handler(handlerThread.getLooper()) {
             @Override
@@ -411,6 +439,11 @@
         mIsActive = false;
         mCallAudioState = new CallAudioState(mIsMute, ROUTE_MAP.get(mCurrentRoute.getType()),
                 supportMask, null, new HashSet<>());
+        if (mFeatureFlags.newAudioPathSpeakerBroadcastAndUnfocusedRouting()) {
+            mAudioManager.addOnCommunicationDeviceChangedListener(
+                    mCommunicationDeviceChangedExecutor,
+                    mCommunicationDeviceListener);
+        }
     }
 
     @Override
@@ -798,11 +831,11 @@
         boolean currentRouteNeedsUpdate = mCurrentRoute.getType() == type;
         if (mFeatureFlags.resolveActiveBtRoutingAndBtTimingIssue()) {
             if (pendingRouteNeedsUpdate) {
-                pendingRouteNeedsUpdate &= mPendingAudioRoute.getDestRoute().getBluetoothAddress()
+                pendingRouteNeedsUpdate = mPendingAudioRoute.getDestRoute().getBluetoothAddress()
                         .equals(previouslyActiveDeviceAddress);
             }
             if (currentRouteNeedsUpdate) {
-                currentRouteNeedsUpdate &= mCurrentRoute.getBluetoothAddress()
+                currentRouteNeedsUpdate = mCurrentRoute.getBluetoothAddress()
                         .equals(previouslyActiveDeviceAddress);
             }
         }
@@ -852,8 +885,13 @@
 
                     // Reset mute state after call ends.
                     handleMuteChanged(false);
-                    // Route back to inactive route.
-                    routeTo(false, mCurrentRoute);
+                    // Ensure we reset call audio state at the end of the call (i.e. if we're on
+                    // speaker, route back to earpiece). If we're on BT, remain on BT if it's still
+                    // connected.
+                    AudioRoute route = mFeatureFlags.resolveActiveBtRoutingAndBtTimingIssue()
+                            ? calculateBaselineRoute(true, null)
+                            : mCurrentRoute;
+                    routeTo(false, route);
                     // Clear pending messages
                     mPendingAudioRoute.clearPendingMessages();
                     clearRingingBluetoothAddress();
@@ -1173,7 +1211,7 @@
         }
 
         // Get corresponding audio route
-        @AudioRoute.AudioRouteType int type = AudioRoute.DEVICE_INFO_TYPE_TO_AUDIO_ROUTE_TYPE.get(
+        @AudioRoute.AudioRouteType int type = DEVICE_INFO_TYPE_TO_AUDIO_ROUTE_TYPE.get(
                 deviceAttr.getType());
         if (BT_AUDIO_ROUTE_TYPES.contains(type)) {
             return getBluetoothRoute(type, deviceAttr.getAddress());
diff --git a/src/com/android/server/telecom/metrics/TelecomMetricsController.java b/src/com/android/server/telecom/metrics/TelecomMetricsController.java
index 1516ddd..df735c0 100644
--- a/src/com/android/server/telecom/metrics/TelecomMetricsController.java
+++ b/src/com/android/server/telecom/metrics/TelecomMetricsController.java
@@ -30,6 +30,8 @@
 
 import androidx.annotation.VisibleForTesting;
 
+import com.android.modules.utils.HandlerExecutor;
+
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
@@ -122,10 +124,23 @@
 
     @VisibleForTesting
     public void registerAtom(int tag, TelecomPulledAtom atom) {
-        mStats.put(tag, atom);
+        final StatsManager statsManager = mContext.getSystemService(StatsManager.class);
+        if (statsManager != null) {
+            statsManager.setPullAtomCallback(tag, null, new HandlerExecutor(atom), this);
+            mStats.put(tag, atom);
+        } else {
+            Log.w(TAG, "Unable to register the pulled atom as StatsManager is null");
+        }
     }
 
     public void destroy() {
+        final StatsManager statsManager = mContext.getSystemService(StatsManager.class);
+        if (statsManager != null) {
+            mStats.forEach((tag, stat) -> statsManager.clearPullAtomCallback(tag));
+        } else {
+            Log.w(TAG, "Unable to clear pulled atoms as StatsManager is null");
+        }
+
         mStats.clear();
         mHandlerThread.quitSafely();
     }
diff --git a/tests/src/com/android/server/telecom/tests/CallAudioModeStateMachineTest.java b/tests/src/com/android/server/telecom/tests/CallAudioModeStateMachineTest.java
index 4513c65..9414e16 100644
--- a/tests/src/com/android/server/telecom/tests/CallAudioModeStateMachineTest.java
+++ b/tests/src/com/android/server/telecom/tests/CallAudioModeStateMachineTest.java
@@ -16,15 +16,10 @@
 
 package com.android.server.telecom.tests;
 
-import static com.android.server.telecom.CallAudioModeStateMachine.CALL_AUDIO_FOCUS_REQUEST;
-import static com.android.server.telecom.CallAudioModeStateMachine.RING_AUDIO_FOCUS_REQUEST;
-
 import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
 import static org.mockito.ArgumentMatchers.anyInt;
 import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.ArgumentMatchers.nullable;
-import static org.mockito.Mockito.atLeast;
 import static org.mockito.Mockito.clearInvocations;
 import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.times;
@@ -49,7 +44,6 @@
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
-import org.mockito.ArgumentCaptor;
 import org.mockito.Mock;
 
 @RunWith(JUnit4.class)
@@ -329,33 +323,6 @@
         verify(mCallAudioManager, times(2)).startRinging();
     }
 
-    @SmallTest
-    @Test
-    public void testAudioFocusRequestWithResolveHiddenDependencies() {
-        CallAudioModeStateMachine sm = new CallAudioModeStateMachine(mSystemStateHelper,
-                mAudioManager, mTestThread.getLooper(), mFeatureFlags, mCommunicationDeviceTracker);
-        when(mFeatureFlags.telecomResolveHiddenDependencies()).thenReturn(true);
-        ArgumentCaptor<AudioFocusRequest> captor = ArgumentCaptor.forClass(AudioFocusRequest.class);
-        sm.setCallAudioManager(mCallAudioManager);
-
-        resetMocks();
-        when(mCallAudioManager.startRinging()).thenReturn(true);
-        when(mCallAudioManager.isRingtonePlaying()).thenReturn(false);
-
-        sm.sendMessage(CallAudioModeStateMachine.ENTER_RING_FOCUS_FOR_TESTING);
-        waitForHandlerAction(sm.getHandler(), TEST_TIMEOUT);
-        verify(mAudioManager).requestAudioFocus(captor.capture());
-        assertTrue(areAudioFocusRequestsMatch(captor.getValue(), RING_AUDIO_FOCUS_REQUEST));
-
-        sm.sendMessage(CallAudioModeStateMachine.ENTER_CALL_FOCUS_FOR_TESTING);
-        waitForHandlerAction(sm.getHandler(), TEST_TIMEOUT);
-        verify(mAudioManager, atLeast(1)).requestAudioFocus(captor.capture());
-        AudioFocusRequest request = captor.getValue();
-        assertTrue(areAudioFocusRequestsMatch(request, CALL_AUDIO_FOCUS_REQUEST));
-
-        sm.sendMessage(CallAudioModeStateMachine.ABANDON_FOCUS_FOR_TESTING);
-    }
-
     private void resetMocks() {
         clearInvocations(mCallAudioManager, mAudioManager);
     }
diff --git a/tests/src/com/android/server/telecom/tests/CallAudioRouteControllerTest.java b/tests/src/com/android/server/telecom/tests/CallAudioRouteControllerTest.java
index c0e9904..528585b 100644
--- a/tests/src/com/android/server/telecom/tests/CallAudioRouteControllerTest.java
+++ b/tests/src/com/android/server/telecom/tests/CallAudioRouteControllerTest.java
@@ -193,6 +193,7 @@
         when(mFeatureFlags.ignoreAutoRouteToWatchDevice()).thenReturn(false);
         when(mFeatureFlags.useRefactoredAudioRouteSwitching()).thenReturn(true);
         when(mFeatureFlags.resolveActiveBtRoutingAndBtTimingIssue()).thenReturn(false);
+        when(mFeatureFlags.newAudioPathSpeakerBroadcastAndUnfocusedRouting()).thenReturn(false);
     }
 
     @After
@@ -1031,6 +1032,32 @@
         BLUETOOTH_DEVICES.remove(scoDevice);
     }
 
+    @Test
+    @SmallTest
+    public void verifyRouteReinitializedAfterCallEnd() {
+        when(mFeatureFlags.resolveActiveBtRoutingAndBtTimingIssue()).thenReturn(true);
+        mController.initialize();
+        mController.setActive(true);
+
+        // Switch to speaker
+        mController.sendMessageWithSessionInfo(SPEAKER_ON);
+        CallAudioState expectedState = new CallAudioState(false, CallAudioState.ROUTE_SPEAKER,
+                CallAudioState.ROUTE_EARPIECE | CallAudioState.ROUTE_SPEAKER, null,
+                new HashSet<>());
+        verify(mCallsManager, timeout(TEST_TIMEOUT)).onCallAudioStateChanged(
+                any(CallAudioState.class), eq(expectedState));
+
+        // Verify that call audio route is reinitialized to default (in this case, earpiece) when
+        // call audio focus is lost.
+        mController.sendMessageWithSessionInfo(SWITCH_FOCUS, NO_FOCUS, 0);
+        mController.sendMessageWithSessionInfo(SPEAKER_OFF);
+        expectedState = new CallAudioState(false, CallAudioState.ROUTE_EARPIECE,
+                CallAudioState.ROUTE_EARPIECE | CallAudioState.ROUTE_SPEAKER, null,
+                new HashSet<>());
+        verify(mCallsManager, timeout(TEST_TIMEOUT)).onCallAudioStateChanged(
+                any(CallAudioState.class), eq(expectedState));
+    }
+
     private void verifyConnectBluetoothDevice(int audioType) {
         mController.initialize();
         mController.setActive(true);
diff --git a/tests/src/com/android/server/telecom/tests/ComponentContextFixture.java b/tests/src/com/android/server/telecom/tests/ComponentContextFixture.java
index 37221d8..1432834 100644
--- a/tests/src/com/android/server/telecom/tests/ComponentContextFixture.java
+++ b/tests/src/com/android/server/telecom/tests/ComponentContextFixture.java
@@ -32,6 +32,7 @@
 import android.annotation.RequiresPermission;
 import android.app.AppOpsManager;
 import android.app.NotificationManager;
+import android.app.StatsManager;
 import android.app.StatusBarManager;
 import android.app.UiModeManager;
 import android.app.role.RoleManager;
@@ -258,6 +259,8 @@
                     return mAccessibilityManager;
                 case Context.BLOCKED_NUMBERS_SERVICE:
                     return mBlockedNumbersManager;
+                case Context.STATS_MANAGER_SERVICE:
+                    return mStatsManager;
                 default:
                     return null;
             }
@@ -303,6 +306,8 @@
                 return Context.BLOCKED_NUMBERS_SERVICE;
             } else if (svcClass == AppOpsManager.class) {
                 return Context.APP_OPS_SERVICE;
+            } else if (svcClass == StatsManager.class) {
+                return Context.STATS_MANAGER_SERVICE;
             }
             throw new UnsupportedOperationException(svcClass.getName());
         }
@@ -644,6 +649,7 @@
     private final PermissionInfo mPermissionInfo = mock(PermissionInfo.class);
     private final SensorPrivacyManager mSensorPrivacyManager = mock(SensorPrivacyManager.class);
     private final List<BroadcastReceiver> mBroadcastReceivers = new ArrayList<>();
+    private final StatsManager mStatsManager = mock(StatsManager.class);
 
     private TelecomManager mTelecomManager = mock(TelecomManager.class);
     private BlockedNumbersManager mBlockedNumbersManager = mock(BlockedNumbersManager.class);
diff --git a/tests/src/com/android/server/telecom/tests/TelecomMetricsControllerTest.java b/tests/src/com/android/server/telecom/tests/TelecomMetricsControllerTest.java
index e2ab8d6..4d494f3 100644
--- a/tests/src/com/android/server/telecom/tests/TelecomMetricsControllerTest.java
+++ b/tests/src/com/android/server/telecom/tests/TelecomMetricsControllerTest.java
@@ -21,8 +21,11 @@
 import static com.android.server.telecom.TelecomStatsLog.TELECOM_ERROR_STATS;
 import static com.google.common.truth.Truth.assertThat;
 import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyObject;
 import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.eq;
 import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
 
 import android.app.StatsManager;
@@ -119,18 +122,27 @@
     }
 
     @Test
-    public void testRegisterAtomIsSameInstance() {
+    public void testRegisterAtom() {
+        StatsManager statsManager = mContext.getSystemService(StatsManager.class);
         ApiStats stats = mock(ApiStats.class);
 
         mTelecomMetricsController.registerAtom(TELECOM_API_STATS, stats);
 
+        verify(statsManager, times(1)).setPullAtomCallback(eq(TELECOM_API_STATS), anyObject(),
+                anyObject(), eq(mTelecomMetricsController));
         assertThat(mTelecomMetricsController.getStats().get(TELECOM_API_STATS))
                 .isSameInstanceAs(stats);
     }
 
     @Test
     public void testDestroy() {
+        StatsManager statsManager = mContext.getSystemService(StatsManager.class);
         mTelecomMetricsController.destroy();
+
+        verify(statsManager, times(1)).clearPullAtomCallback(eq(CALL_AUDIO_ROUTE_STATS));
+        verify(statsManager, times(1)).clearPullAtomCallback(eq(CALL_STATS));
+        verify(statsManager, times(1)).clearPullAtomCallback(eq(TELECOM_API_STATS));
+        verify(statsManager, times(1)).clearPullAtomCallback(eq(TELECOM_ERROR_STATS));
         assertThat(mTelecomMetricsController.getStats()).isEmpty();
     }