diff --git a/src/com/android/services/telephony/TelecomAccountRegistry.java b/src/com/android/services/telephony/TelecomAccountRegistry.java
index 6c8dcaa..642af85 100644
--- a/src/com/android/services/telephony/TelecomAccountRegistry.java
+++ b/src/com/android/services/telephony/TelecomAccountRegistry.java
@@ -107,9 +107,31 @@
         }
 
         /**
+         * Trigger re-registration of this account.
+         */
+        public void reRegisterPstnPhoneAccount() {
+            PhoneAccount newAccount = buildPstnPhoneAccount(mIsEmergency, mIsDummy);
+            if (!newAccount.equals(mAccount)) {
+                Log.i(this, "reRegisterPstnPhoneAccount: subId: " + getSubId()
+                        + " - re-register due to account change.");
+                mTelecomManager.registerPhoneAccount(newAccount);
+                mAccount = newAccount;
+            } else {
+                Log.i(this, "reRegisterPstnPhoneAccount: subId: " + getSubId() + " - no change");
+            }
+        }
+
+        private PhoneAccount registerPstnPhoneAccount(boolean isEmergency, boolean isDummyAccount) {
+            PhoneAccount account = buildPstnPhoneAccount(mIsEmergency, mIsDummy);
+            // Register with Telecom and put into the account entry.
+            mTelecomManager.registerPhoneAccount(account);
+            return account;
+        }
+
+        /**
          * Registers the specified account with Telecom as a PhoneAccountHandle.
          */
-        private PhoneAccount registerPstnPhoneAccount(boolean isEmergency, boolean isDummyAccount) {
+        private PhoneAccount buildPstnPhoneAccount(boolean isEmergency, boolean isDummyAccount) {
             String dummyPrefix = isDummyAccount ? "Dummy " : "";
 
             // Build the Phone account handle.
@@ -312,9 +334,6 @@
                     .setGroupId(groupId)
                     .build();
 
-            // Register with Telecom and put into the account entry.
-            mTelecomManager.registerPhoneAccount(account);
-
             return account;
         }
 
@@ -322,6 +341,10 @@
             return mAccount != null ? mAccount.getAccountHandle() : null;
         }
 
+        public int getSubId() {
+            return mPhone.getSubId();
+        }
+
         /**
          * Determines from carrier configuration whether pausing of IMS video calls is supported.
          *
@@ -579,19 +602,27 @@
         }
     };
 
-    private final BroadcastReceiver mUserSwitchedReceiver = new BroadcastReceiver() {
+    private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
         @Override
         public void onReceive(Context context, Intent intent) {
-            Log.i(this, "User changed, re-registering phone accounts.");
+            if (Intent.ACTION_USER_SWITCHED.equals(intent.getAction())) {
+                Log.i(this, "User changed, re-registering phone accounts.");
 
-            int userHandleId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0);
-            UserHandle currentUserHandle = new UserHandle(userHandleId);
-            mIsPrimaryUser = UserManager.get(mContext).getPrimaryUser().getUserHandle()
-                    .equals(currentUserHandle);
+                int userHandleId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0);
+                UserHandle currentUserHandle = new UserHandle(userHandleId);
+                mIsPrimaryUser = UserManager.get(mContext).getPrimaryUser().getUserHandle()
+                        .equals(currentUserHandle);
 
-            // Any time the user changes, re-register the accounts.
-            tearDownAccounts();
-            setupAccounts();
+                // Any time the user changes, re-register the accounts.
+                tearDownAccounts();
+                setupAccounts();
+            } else if (CarrierConfigManager.ACTION_CARRIER_CONFIG_CHANGED.equals(
+                    intent.getAction())) {
+                Log.i(this, "Carrier-config changed, checking for phone account updates.");
+                int subId = intent.getIntExtra(SubscriptionManager.EXTRA_SUBSCRIPTION_INDEX,
+                        SubscriptionManager.INVALID_SUBSCRIPTION_ID);
+                handleCarrierConfigChange(subId);
+            }
         }
     };
 
@@ -814,8 +845,10 @@
 
         // Listen for user switches.  When the user switches, we need to ensure that if the current
         // use is not the primary user we disable video calling.
-        mContext.registerReceiver(mUserSwitchedReceiver,
-                new IntentFilter(Intent.ACTION_USER_SWITCHED));
+        IntentFilter filter = new IntentFilter();
+        filter.addAction(Intent.ACTION_USER_SWITCHED);
+        filter.addAction(CarrierConfigManager.ACTION_CARRIER_CONFIG_CHANGED);
+        mContext.registerReceiver(mReceiver, filter);
 
         // Listen to the RTT system setting so that we update it when the user flips it.
         ContentObserver rttUiSettingObserver = new ContentObserver(
@@ -951,4 +984,27 @@
             mAccounts.clear();
         }
     }
+
+    /**
+     * Handles changes to the carrier configuration which may impact a phone account.  There are
+     * some extras defined in the {@link PhoneAccount} which are based on carrier config options.
+     * Only checking for carrier config changes when the subscription is configured runs the risk of
+     * missing carrier config changes which happen later.
+     * @param subId The subid the carrier config changed for, if applicable.  Will be
+     *              {@link SubscriptionManager#INVALID_SUBSCRIPTION_ID} if not specified.
+     */
+    private void handleCarrierConfigChange(int subId) {
+        if (subId == SubscriptionManager.INVALID_SUBSCRIPTION_ID) {
+            return;
+        }
+        synchronized (mAccountsLock) {
+            for (AccountEntry entry : mAccounts) {
+                if (entry.getSubId() == subId) {
+                    Log.d(this, "handleCarrierConfigChange: subId=%d, accountSubId=%d", subId,
+                            entry.getSubId());
+                    entry.reRegisterPstnPhoneAccount();
+                }
+            }
+        }
+    }
 }