diff --git a/services/core/java/com/android/server/vcn/TelephonySubscriptionTracker.java b/services/core/java/com/android/server/vcn/TelephonySubscriptionTracker.java
index ca4a32f..099c9ae 100644
--- a/services/core/java/com/android/server/vcn/TelephonySubscriptionTracker.java
+++ b/services/core/java/com/android/server/vcn/TelephonySubscriptionTracker.java
@@ -16,9 +16,6 @@
 
 package com.android.server.vcn;
 
-import static android.telephony.CarrierConfigManager.ACTION_CARRIER_CONFIG_CHANGED;
-import static android.telephony.CarrierConfigManager.EXTRA_SLOT_INDEX;
-import static android.telephony.CarrierConfigManager.EXTRA_SUBSCRIPTION_INDEX;
 import static android.telephony.SubscriptionManager.INVALID_SIM_SLOT_INDEX;
 import static android.telephony.SubscriptionManager.INVALID_SUBSCRIPTION_ID;
 import static android.telephony.TelephonyManager.ACTION_MULTI_SIM_CONFIG_CHANGED;
@@ -48,7 +45,6 @@
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.annotations.VisibleForTesting.Visibility;
 import com.android.internal.util.IndentingPrintWriter;
-import com.android.server.vcn.util.PersistableBundleUtils;
 import com.android.server.vcn.util.PersistableBundleUtils.PersistableBundleWrapper;
 
 import java.util.ArrayList;
@@ -109,6 +105,12 @@
 
     @NonNull private TelephonySubscriptionSnapshot mCurrentSnapshot;
 
+    @NonNull
+    private final CarrierConfigManager.CarrierConfigChangeListener mCarrierConfigChangeListener =
+            (int logicalSlotIndex, int subscriptionId, int carrierId, int specificCarrierId) ->
+                    handleActionCarrierConfigChanged(logicalSlotIndex, subscriptionId);
+
+
     public TelephonySubscriptionTracker(
             @NonNull Context context,
             @NonNull Handler handler,
@@ -149,13 +151,14 @@
     public void register() {
         final HandlerExecutor executor = new HandlerExecutor(mHandler);
         final IntentFilter filter = new IntentFilter();
-        filter.addAction(ACTION_CARRIER_CONFIG_CHANGED);
         filter.addAction(ACTION_MULTI_SIM_CONFIG_CHANGED);
 
         mContext.registerReceiver(this, filter, null, mHandler);
         mSubscriptionManager.addOnSubscriptionsChangedListener(
                 executor, mSubscriptionChangedListener);
         mTelephonyManager.registerTelephonyCallback(executor, mActiveDataSubIdListener);
+        mCarrierConfigManager.registerCarrierConfigChangeListener(executor,
+                mCarrierConfigChangeListener);
 
         registerCarrierPrivilegesCallbacks();
     }
@@ -197,6 +200,7 @@
         mContext.unregisterReceiver(this);
         mSubscriptionManager.removeOnSubscriptionsChangedListener(mSubscriptionChangedListener);
         mTelephonyManager.unregisterTelephonyCallback(mActiveDataSubIdListener);
+        mCarrierConfigManager.unregisterCarrierConfigChangeListener(mCarrierConfigChangeListener);
 
         unregisterCarrierPrivilegesCallbacks();
     }
@@ -273,7 +277,7 @@
     }
 
     /**
-     * Broadcast receiver for ACTION_CARRIER_CONFIG_CHANGED
+     * Broadcast receiver for ACTION_MULTI_SIM_CONFIG_CHANGED
      *
      * <p>The broadcast receiver is registered with mHandler, so callbacks & broadcasts are all
      * serialized on mHandler, avoiding the need for locking.
@@ -281,9 +285,6 @@
     @Override
     public void onReceive(Context context, Intent intent) {
         switch (intent.getAction()) {
-            case ACTION_CARRIER_CONFIG_CHANGED:
-                handleActionCarrierConfigChanged(context, intent);
-                break;
             case ACTION_MULTI_SIM_CONFIG_CHANGED:
                 handleActionMultiSimConfigChanged(context, intent);
                 break;
@@ -310,26 +311,21 @@
         handleSubscriptionsChanged();
     }
 
-    private void handleActionCarrierConfigChanged(Context context, Intent intent) {
-        // Accept sticky broadcasts; if CARRIER_CONFIG_CHANGED was previously broadcast and it
-        // already was for an identified carrier, we can stop waiting for initial load to complete
-        final int subId = intent.getIntExtra(EXTRA_SUBSCRIPTION_INDEX, INVALID_SUBSCRIPTION_ID);
-        final int slotId = intent.getIntExtra(EXTRA_SLOT_INDEX, INVALID_SIM_SLOT_INDEX);
-
+    private void handleActionCarrierConfigChanged(int slotId, int subId) {
         if (slotId == INVALID_SIM_SLOT_INDEX) {
             return;
         }
 
         if (SubscriptionManager.isValidSubscriptionId(subId)) {
-            final PersistableBundle carrierConfig = mCarrierConfigManager.getConfigForSubId(subId);
+            // Get only configs as needed to save memory.
+            final PersistableBundle carrierConfig = mCarrierConfigManager.getConfigForSubId(subId,
+                    VcnManager.VCN_RELATED_CARRIER_CONFIG_KEYS);
             if (mDeps.isConfigForIdentifiedCarrier(carrierConfig)) {
                 mReadySubIdsBySlotId.put(slotId, subId);
 
-                final PersistableBundle minimized =
-                        PersistableBundleUtils.minimizeBundle(
-                                carrierConfig, VcnManager.VCN_RELATED_CARRIER_CONFIG_KEYS);
-                if (minimized != null) {
-                    mSubIdToCarrierConfigMap.put(subId, new PersistableBundleWrapper(minimized));
+                if (!carrierConfig.isEmpty()) {
+                    mSubIdToCarrierConfigMap.put(subId,
+                            new PersistableBundleWrapper(carrierConfig));
                 }
                 handleSubscriptionsChanged();
             }
diff --git a/tests/vcn/java/com/android/server/vcn/TelephonySubscriptionTrackerTest.java b/tests/vcn/java/com/android/server/vcn/TelephonySubscriptionTrackerTest.java
index 965b073..34f884b 100644
--- a/tests/vcn/java/com/android/server/vcn/TelephonySubscriptionTrackerTest.java
+++ b/tests/vcn/java/com/android/server/vcn/TelephonySubscriptionTrackerTest.java
@@ -19,9 +19,6 @@
 import static android.net.NetworkCapabilities.TRANSPORT_CELLULAR;
 import static android.net.NetworkCapabilities.TRANSPORT_WIFI;
 import static android.net.vcn.VcnManager.VCN_RESTRICTED_TRANSPORTS_INT_ARRAY_KEY;
-import static android.telephony.CarrierConfigManager.ACTION_CARRIER_CONFIG_CHANGED;
-import static android.telephony.CarrierConfigManager.EXTRA_SLOT_INDEX;
-import static android.telephony.CarrierConfigManager.EXTRA_SUBSCRIPTION_INDEX;
 import static android.telephony.SubscriptionManager.INVALID_SIM_SLOT_INDEX;
 import static android.telephony.SubscriptionManager.INVALID_SUBSCRIPTION_ID;
 import static android.telephony.TelephonyCallback.ActiveDataSubscriptionIdListener;
@@ -143,6 +140,8 @@
     @NonNull private TelephonySubscriptionTrackerCallback mCallback;
     @NonNull private TelephonySubscriptionTracker mTelephonySubscriptionTracker;
 
+    @NonNull private CarrierConfigManager.CarrierConfigChangeListener mCarrierConfigChangeListener;
+
     public TelephonySubscriptionTrackerTest() {
         mContext = mock(Context.class);
         mTestLooper = new TestLooper();
@@ -173,7 +172,7 @@
                 .getSystemService(Context.CARRIER_CONFIG_SERVICE);
         doReturn(TEST_CARRIER_CONFIG)
                 .when(mCarrierConfigManager)
-                .getConfigForSubId(eq(TEST_SUBSCRIPTION_ID_1));
+                .getConfigForSubId(eq(TEST_SUBSCRIPTION_ID_1), any());
 
         // subId 1, 2 are in same subGrp, only subId 1 is active
         doReturn(TEST_PARCEL_UUID).when(TEST_SUBINFO_1).getGroupUuid();
@@ -189,9 +188,15 @@
         doReturn(2).when(mTelephonyManager).getActiveModemCount();
 
         mCallback = mock(TelephonySubscriptionTrackerCallback.class);
+        // Capture CarrierConfigChangeListener to emulate the carrier config change notification
+        ArgumentCaptor<CarrierConfigManager.CarrierConfigChangeListener> listenerArgumentCaptor =
+                ArgumentCaptor.forClass(CarrierConfigManager.CarrierConfigChangeListener.class);
         mTelephonySubscriptionTracker =
                 new TelephonySubscriptionTracker(mContext, mHandler, mCallback, mDeps);
         mTelephonySubscriptionTracker.register();
+        verify(mCarrierConfigManager).registerCarrierConfigChangeListener(any(),
+                listenerArgumentCaptor.capture());
+        mCarrierConfigChangeListener = listenerArgumentCaptor.getAllValues().get(0);
 
         doReturn(true).when(mDeps).isConfigForIdentifiedCarrier(any());
         doReturn(Arrays.asList(TEST_SUBINFO_1, TEST_SUBINFO_2))
@@ -239,14 +244,11 @@
         return intent;
     }
 
-    private Intent buildTestBroadcastIntent(boolean hasValidSubscription) {
-        Intent intent = new Intent(ACTION_CARRIER_CONFIG_CHANGED);
-        intent.putExtra(EXTRA_SLOT_INDEX, TEST_SIM_SLOT_INDEX);
-        intent.putExtra(
-                EXTRA_SUBSCRIPTION_INDEX,
-                hasValidSubscription ? TEST_SUBSCRIPTION_ID_1 : INVALID_SUBSCRIPTION_ID);
-
-        return intent;
+    private void sendCarrierConfigChange(boolean hasValidSubscription) {
+        mCarrierConfigChangeListener.onCarrierConfigChanged(
+                TEST_SIM_SLOT_INDEX,
+                hasValidSubscription ? TEST_SUBSCRIPTION_ID_1 : INVALID_SUBSCRIPTION_ID,
+                TelephonyManager.UNKNOWN_CARRIER_ID, TelephonyManager.UNKNOWN_CARRIER_ID);
     }
 
     private TelephonySubscriptionSnapshot buildExpectedSnapshot(
@@ -302,14 +304,15 @@
                         any(),
                         eq(mHandler));
         final IntentFilter filter = getIntentFilter();
-        assertEquals(2, filter.countActions());
-        assertTrue(filter.hasAction(ACTION_CARRIER_CONFIG_CHANGED));
+        assertEquals(1, filter.countActions());
         assertTrue(filter.hasAction(ACTION_MULTI_SIM_CONFIG_CHANGED));
 
         verify(mSubscriptionManager)
                 .addOnSubscriptionsChangedListener(any(HandlerExecutor.class), any());
         assertNotNull(getOnSubscriptionsChangedListener());
 
+        verify(mCarrierConfigManager).registerCarrierConfigChangeListener(any(), any());
+
         verify(mTelephonyManager, times(2))
                 .registerCarrierPrivilegesCallback(anyInt(), any(HandlerExecutor.class), any());
         verify(mTelephonyManager)
@@ -442,7 +445,7 @@
 
     @Test
     public void testReceiveBroadcast_ConfigReadyWithSubscriptions() throws Exception {
-        mTelephonySubscriptionTracker.onReceive(mContext, buildTestBroadcastIntent(true));
+        sendCarrierConfigChange(true /* hasValidSubscription */);
         mTestLooper.dispatchAll();
 
         verify(mCallback).onNewSnapshot(eq(buildExpectedSnapshot(TEST_PRIVILEGED_PACKAGES)));
@@ -454,7 +457,7 @@
                 .when(mSubscriptionManager)
                 .getAllSubscriptionInfoList();
 
-        mTelephonySubscriptionTracker.onReceive(mContext, buildTestBroadcastIntent(true));
+        sendCarrierConfigChange(true /* hasValidSubscription */);
         mTestLooper.dispatchAll();
 
         // Expect an empty snapshot
@@ -465,7 +468,7 @@
     public void testReceiveBroadcast_SlotCleared() throws Exception {
         setupReadySubIds();
 
-        mTelephonySubscriptionTracker.onReceive(mContext, buildTestBroadcastIntent(false));
+        sendCarrierConfigChange(false /* hasValidSubscription */);
         mTestLooper.dispatchAll();
 
         verifyNoActiveSubscriptions();
@@ -476,7 +479,7 @@
     public void testReceiveBroadcast_ConfigNotReady() throws Exception {
         doReturn(false).when(mDeps).isConfigForIdentifiedCarrier(any());
 
-        mTelephonySubscriptionTracker.onReceive(mContext, buildTestBroadcastIntent(true));
+        sendCarrierConfigChange(true /* hasValidSubscription */);
         mTestLooper.dispatchAll();
 
         // No interactions expected; config was not loaded
@@ -485,21 +488,21 @@
 
     @Test
     public void testSubscriptionsClearedAfterValidTriggersCallbacks() throws Exception {
-        mTelephonySubscriptionTracker.onReceive(mContext, buildTestBroadcastIntent(true));
+        sendCarrierConfigChange(true /* hasValidSubscription */);
         mTestLooper.dispatchAll();
         verify(mCallback).onNewSnapshot(eq(buildExpectedSnapshot(TEST_PRIVILEGED_PACKAGES)));
         assertNotNull(
                 mTelephonySubscriptionTracker.getReadySubIdsBySlotId().get(TEST_SIM_SLOT_INDEX));
 
         doReturn(Collections.emptyList()).when(mSubscriptionManager).getAllSubscriptionInfoList();
-        mTelephonySubscriptionTracker.onReceive(mContext, buildTestBroadcastIntent(true));
+        sendCarrierConfigChange(true /* hasValidSubscription */);
         mTestLooper.dispatchAll();
         verify(mCallback).onNewSnapshot(eq(buildExpectedSnapshot(emptyMap(), emptyMap())));
     }
 
     @Test
     public void testCarrierConfigUpdatedAfterValidTriggersCallbacks() throws Exception {
-        mTelephonySubscriptionTracker.onReceive(mContext, buildTestBroadcastIntent(true));
+        sendCarrierConfigChange(true /* hasValidSubscription */);
         mTestLooper.dispatchAll();
         verify(mCallback).onNewSnapshot(eq(buildExpectedSnapshot(TEST_PRIVILEGED_PACKAGES)));
         reset(mCallback);
@@ -510,12 +513,12 @@
                 new int[] {TRANSPORT_WIFI, TRANSPORT_CELLULAR});
         doReturn(updatedConfig)
                 .when(mCarrierConfigManager)
-                .getConfigForSubId(eq(TEST_SUBSCRIPTION_ID_1));
+                .getConfigForSubId(eq(TEST_SUBSCRIPTION_ID_1), any());
 
         Map<Integer, PersistableBundleWrapper> subIdToCarrierConfigMap = new HashMap<>();
         subIdToCarrierConfigMap.put(
                 TEST_SUBSCRIPTION_ID_1, new PersistableBundleWrapper(updatedConfig));
-        mTelephonySubscriptionTracker.onReceive(mContext, buildTestBroadcastIntent(true));
+        sendCarrierConfigChange(true /* hasValidSubscription */);
         mTestLooper.dispatchAll();
 
         verify(mCallback)
@@ -530,13 +533,13 @@
 
     @Test
     public void testSlotClearedAfterValidTriggersCallbacks() throws Exception {
-        mTelephonySubscriptionTracker.onReceive(mContext, buildTestBroadcastIntent(true));
+        sendCarrierConfigChange(true /* hasValidSubscription */);
         mTestLooper.dispatchAll();
         verify(mCallback).onNewSnapshot(eq(buildExpectedSnapshot(TEST_PRIVILEGED_PACKAGES)));
         assertNotNull(
                 mTelephonySubscriptionTracker.getReadySubIdsBySlotId().get(TEST_SIM_SLOT_INDEX));
 
-        mTelephonySubscriptionTracker.onReceive(mContext, buildTestBroadcastIntent(false));
+        sendCarrierConfigChange(false /* hasValidSubscription */);
         mTestLooper.dispatchAll();
         verify(mCallback)
                 .onNewSnapshot(