diff --git a/services/core/java/com/android/server/VcnManagementService.java b/services/core/java/com/android/server/VcnManagementService.java
index 0c990ec..6a7afd9 100644
--- a/services/core/java/com/android/server/VcnManagementService.java
+++ b/services/core/java/com/android/server/VcnManagementService.java
@@ -24,7 +24,6 @@
 import static android.net.vcn.VcnManager.VCN_STATUS_CODE_INACTIVE;
 import static android.net.vcn.VcnManager.VCN_STATUS_CODE_NOT_CONFIGURED;
 import static android.net.vcn.VcnManager.VCN_STATUS_CODE_SAFE_MODE;
-import static android.telephony.SubscriptionManager.isValidSubscriptionId;
 
 import static com.android.server.vcn.TelephonySubscriptionTracker.TelephonySubscriptionSnapshot;
 import static com.android.server.vcn.TelephonySubscriptionTracker.TelephonySubscriptionTrackerCallback;
@@ -164,10 +163,6 @@
     @VisibleForTesting(visibility = Visibility.PRIVATE)
     static final String VCN_CONFIG_FILE = "/data/system/vcn/configs.xml";
 
-    // TODO(b/176956496): Directly use CarrierServiceBindHelper.UNBIND_DELAY_MILLIS
-    @VisibleForTesting(visibility = Visibility.PRIVATE)
-    static final long CARRIER_PRIVILEGES_LOST_TEARDOWN_DELAY_MS = TimeUnit.SECONDS.toMillis(30);
-
     /* Binder context for this service */
     @NonNull private final Context mContext;
     @NonNull private final Dependencies mDeps;
@@ -372,12 +367,15 @@
 
     /** Notifies the VcnManagementService that external dependencies can be set up. */
     public void systemReady() {
-        mNetworkProvider.register();
-        mContext.getSystemService(ConnectivityManager.class)
-                .registerNetworkCallback(
-                        new NetworkRequest.Builder().clearCapabilities().build(),
-                        mTrackingNetworkCallback);
-        mTelephonySubscriptionTracker.register();
+        // Always run on the handler thread to ensure consistency.
+        mHandler.post(() -> {
+            mNetworkProvider.register();
+            mContext.getSystemService(ConnectivityManager.class)
+                    .registerNetworkCallback(
+                            new NetworkRequest.Builder().clearCapabilities().build(),
+                            mTrackingNetworkCallback);
+            mTelephonySubscriptionTracker.register();
+        });
     }
 
     private void enforcePrimaryUser() {
@@ -471,22 +469,15 @@
                         if (!mVcns.containsKey(subGrp)) {
                             startVcnLocked(subGrp, entry.getValue());
                         }
-
-                        // Cancel any scheduled teardowns for active subscriptions
-                        mHandler.removeCallbacksAndMessages(mVcns.get(subGrp));
                     }
                 }
 
-                // Schedule teardown of any VCN instances that have lost carrier privileges (after a
-                // delay)
+                // Schedule teardown of any VCN instances that have lost carrier privileges
                 for (Entry<ParcelUuid, Vcn> entry : mVcns.entrySet()) {
                     final ParcelUuid subGrp = entry.getKey();
                     final VcnConfig config = mConfigs.get(subGrp);
 
                     final boolean isActiveSubGrp = isActiveSubGroup(subGrp, snapshot);
-                    final boolean isValidActiveDataSubIdNotInVcnSubGrp =
-                            isValidSubscriptionId(snapshot.getActiveDataSubscriptionId())
-                                    && !isActiveSubGroup(subGrp, snapshot);
 
                     // TODO(b/193687515): Support multiple VCNs active at the same time
                     if (config == null
@@ -496,31 +487,12 @@
                         final ParcelUuid uuidToTeardown = subGrp;
                         final Vcn instanceToTeardown = entry.getValue();
 
-                        // TODO(b/193687515): Support multiple VCNs active at the same time
-                        // If directly switching to a subscription not in the current group,
-                        // teardown immediately to prevent other subscription's network from being
-                        // outscored by the VCN. Otherwise, teardown after a delay to ensure that
-                        // SIM profile switches do not trigger the VCN to cycle.
-                        final long teardownDelayMs =
-                                isValidActiveDataSubIdNotInVcnSubGrp
-                                        ? 0
-                                        : CARRIER_PRIVILEGES_LOST_TEARDOWN_DELAY_MS;
-                        mHandler.postDelayed(() -> {
-                            synchronized (mLock) {
-                                // Guard against case where this is run after a old instance was
-                                // torn down, and a new instance was started. Verify to ensure
-                                // correct instance is torn down. This could happen as a result of a
-                                // Carrier App manually removing/adding a VcnConfig.
-                                if (mVcns.get(uuidToTeardown) == instanceToTeardown) {
-                                    stopVcnLocked(uuidToTeardown);
+                        stopVcnLocked(uuidToTeardown);
 
-                                    // TODO(b/181789060): invoke asynchronously after Vcn notifies
-                                    // through VcnCallback
-                                    notifyAllPermissionedStatusCallbacksLocked(
-                                            uuidToTeardown, VCN_STATUS_CODE_INACTIVE);
-                                }
-                            }
-                        }, instanceToTeardown, teardownDelayMs);
+                        // TODO(b/181789060): invoke asynchronously after Vcn notifies
+                        // through VcnCallback
+                        notifyAllPermissionedStatusCallbacksLocked(
+                                uuidToTeardown, VCN_STATUS_CODE_INACTIVE);
                     } else {
                         // If this VCN's status has not changed, update it with the new snapshot
                         entry.getValue().updateSubscriptionSnapshot(mLastSnapshot);
diff --git a/tests/vcn/java/com/android/server/VcnManagementServiceTest.java b/tests/vcn/java/com/android/server/VcnManagementServiceTest.java
index 7c7dc4d..bb98bc0 100644
--- a/tests/vcn/java/com/android/server/VcnManagementServiceTest.java
+++ b/tests/vcn/java/com/android/server/VcnManagementServiceTest.java
@@ -23,7 +23,6 @@
 import static android.net.NetworkCapabilities.TRANSPORT_WIFI;
 import static android.net.vcn.VcnManager.VCN_STATUS_CODE_ACTIVE;
 import static android.net.vcn.VcnManager.VCN_STATUS_CODE_SAFE_MODE;
-import static android.telephony.SubscriptionManager.INVALID_SUBSCRIPTION_ID;
 import static android.telephony.TelephonyManager.CARRIER_PRIVILEGE_STATUS_HAS_ACCESS;
 import static android.telephony.TelephonyManager.CARRIER_PRIVILEGE_STATUS_NO_ACCESS;
 
@@ -264,6 +263,7 @@
     @Test
     public void testSystemReady() throws Exception {
         mVcnMgmtSvc.systemReady();
+        mTestLooper.dispatchAll();
 
         verify(mConnMgr).registerNetworkProvider(any(VcnNetworkProvider.class));
         verify(mSubscriptionTracker).register();
@@ -475,10 +475,8 @@
         mVcnMgmtSvc.addVcnUnderlyingNetworkPolicyListener(mMockPolicyListener);
 
         triggerSubscriptionTrackerCbAndGetSnapshot(null, Collections.emptySet());
-
-        // Verify teardown after delay
-        mTestLooper.moveTimeForward(VcnManagementService.CARRIER_PRIVILEGES_LOST_TEARDOWN_DELAY_MS);
         mTestLooper.dispatchAll();
+
         verify(vcn).teardownAsynchronously();
         verify(mMockPolicyListener).onPolicyChanged();
     }
@@ -504,92 +502,6 @@
         assertEquals(0, mVcnMgmtSvc.getAllVcns().size());
     }
 
-    /**
-     * Tests an intermediate state where carrier privileges are marked as lost before active data
-     * subId changes during a SIM ejection.
-     *
-     * <p>The expected outcome is that the VCN is torn down after a delay, as opposed to
-     * immediately.
-     */
-    @Test
-    public void testTelephonyNetworkTrackerCallbackLostCarrierPrivilegesBeforeActiveDataSubChanges()
-            throws Exception {
-        setupActiveSubscription(TEST_UUID_2);
-
-        final TelephonySubscriptionTrackerCallback cb = getTelephonySubscriptionTrackerCallback();
-        final Vcn vcn = startAndGetVcnInstance(TEST_UUID_2);
-
-        // Simulate privileges lost
-        triggerSubscriptionTrackerCbAndGetSnapshot(
-                TEST_SUBSCRIPTION_ID,
-                TEST_UUID_2,
-                Collections.emptySet(),
-                Collections.emptyMap(),
-                false /* hasCarrierPrivileges */);
-
-        // Verify teardown after delay
-        mTestLooper.moveTimeForward(VcnManagementService.CARRIER_PRIVILEGES_LOST_TEARDOWN_DELAY_MS);
-        mTestLooper.dispatchAll();
-        verify(vcn).teardownAsynchronously();
-    }
-
-    @Test
-    public void testTelephonyNetworkTrackerCallbackSimSwitchesDoNotKillVcnInstances()
-            throws Exception {
-        setupActiveSubscription(TEST_UUID_2);
-
-        final TelephonySubscriptionTrackerCallback cb = getTelephonySubscriptionTrackerCallback();
-        final Vcn vcn = startAndGetVcnInstance(TEST_UUID_2);
-
-        // Simulate SIM unloaded
-        triggerSubscriptionTrackerCbAndGetSnapshot(
-                INVALID_SUBSCRIPTION_ID,
-                null /* activeDataSubscriptionGroup */,
-                Collections.emptySet(),
-                Collections.emptyMap(),
-                false /* hasCarrierPrivileges */);
-
-        // Simulate new SIM loaded right during teardown delay.
-        mTestLooper.moveTimeForward(
-                VcnManagementService.CARRIER_PRIVILEGES_LOST_TEARDOWN_DELAY_MS / 2);
-        mTestLooper.dispatchAll();
-        triggerSubscriptionTrackerCbAndGetSnapshot(TEST_UUID_2, Collections.singleton(TEST_UUID_2));
-
-        // Verify that even after the full timeout duration, the VCN instance is not torn down
-        mTestLooper.moveTimeForward(VcnManagementService.CARRIER_PRIVILEGES_LOST_TEARDOWN_DELAY_MS);
-        mTestLooper.dispatchAll();
-        verify(vcn, never()).teardownAsynchronously();
-    }
-
-    @Test
-    public void testTelephonyNetworkTrackerCallbackDoesNotKillNewVcnInstances() throws Exception {
-        setupActiveSubscription(TEST_UUID_2);
-
-        final TelephonySubscriptionTrackerCallback cb = getTelephonySubscriptionTrackerCallback();
-        final Vcn oldInstance = startAndGetVcnInstance(TEST_UUID_2);
-
-        // Simulate SIM unloaded
-        triggerSubscriptionTrackerCbAndGetSnapshot(null, Collections.emptySet());
-
-        // Config cleared, SIM reloaded & config re-added right before teardown delay, staring new
-        // vcnInstance.
-        mTestLooper.moveTimeForward(
-                VcnManagementService.CARRIER_PRIVILEGES_LOST_TEARDOWN_DELAY_MS / 2);
-        mTestLooper.dispatchAll();
-        mVcnMgmtSvc.clearVcnConfig(TEST_UUID_2, TEST_PACKAGE_NAME);
-        triggerSubscriptionTrackerCbAndGetSnapshot(TEST_UUID_2, Collections.singleton(TEST_UUID_2));
-        final Vcn newInstance = startAndGetVcnInstance(TEST_UUID_2);
-
-        // Verify that new instance was different, and the old one was torn down
-        assertTrue(oldInstance != newInstance);
-        verify(oldInstance).teardownAsynchronously();
-
-        // Verify that even after the full timeout duration, the new VCN instance is not torn down
-        mTestLooper.moveTimeForward(VcnManagementService.CARRIER_PRIVILEGES_LOST_TEARDOWN_DELAY_MS);
-        mTestLooper.dispatchAll();
-        verify(newInstance, never()).teardownAsynchronously();
-    }
-
     @Test
     public void testPackageChangeListenerRegistered() throws Exception {
         verify(mMockContext).registerReceiver(any(BroadcastReceiver.class), argThat(filter -> {
@@ -925,6 +837,8 @@
     private void setupSubscriptionAndStartVcn(
             int subId, ParcelUuid subGrp, boolean isVcnActive, boolean hasCarrierPrivileges) {
         mVcnMgmtSvc.systemReady();
+        mTestLooper.dispatchAll();
+
         triggerSubscriptionTrackerCbAndGetSnapshot(
                 subGrp,
                 Collections.singleton(subGrp),
@@ -1020,6 +934,7 @@
 
     private void setupTrackedCarrierWifiNetwork(NetworkCapabilities caps) {
         mVcnMgmtSvc.systemReady();
+        mTestLooper.dispatchAll();
 
         final ArgumentCaptor<NetworkCallback> captor =
                 ArgumentCaptor.forClass(NetworkCallback.class);
@@ -1264,15 +1179,14 @@
                 true /* isActive */,
                 true /* hasCarrierPrivileges */);
 
-        // VCN is currently active. Lose carrier privileges for TEST_PACKAGE and hit teardown
-        // timeout so the VCN goes inactive.
+        // VCN is currently active. Lose carrier privileges for TEST_PACKAGE so the VCN goes
+        // inactive.
         final TelephonySubscriptionSnapshot snapshot =
                 triggerSubscriptionTrackerCbAndGetSnapshot(
                         TEST_UUID_1,
                         Collections.singleton(TEST_UUID_1),
                         Collections.singletonMap(TEST_SUBSCRIPTION_ID, TEST_UUID_1),
                         false /* hasCarrierPrivileges */);
-        mTestLooper.moveTimeForward(VcnManagementService.CARRIER_PRIVILEGES_LOST_TEARDOWN_DELAY_MS);
         mTestLooper.dispatchAll();
 
         // Giving TEST_PACKAGE privileges again will restart the VCN (which will indicate ACTIVE