diff --git a/src/com/android/server/telecom/TelecomServiceImpl.java b/src/com/android/server/telecom/TelecomServiceImpl.java
index 62e0f3f..9ccae9a 100644
--- a/src/com/android/server/telecom/TelecomServiceImpl.java
+++ b/src/com/android/server/telecom/TelecomServiceImpl.java
@@ -279,6 +279,23 @@
 
         @Override
         public List<PhoneAccountHandle> getPhoneAccountsForPackage(String packageName) {
+            //TODO: Deprecate this in S
+            try {
+                enforceCallingPackage(packageName);
+            } catch (SecurityException se1) {
+                EventLog.writeEvent(0x534e4554, "153995334", Binder.getCallingUid(),
+                        "getPhoneAccountsForPackage: invalid calling package");
+                throw se1;
+            }
+
+            try {
+                enforcePermission(READ_PRIVILEGED_PHONE_STATE);
+            } catch (SecurityException se2) {
+                EventLog.writeEvent(0x534e4554, "153995334", Binder.getCallingUid(),
+                        "getPhoneAccountsForPackage: no permission");
+                throw se2;
+            }
+
             synchronized (mLock) {
                 final UserHandle callingUserHandle = Binder.getCallingUserHandle();
                 long token = Binder.clearCallingIdentity();
diff --git a/src/com/android/server/telecom/TtyManager.java b/src/com/android/server/telecom/TtyManager.java
index 2d04234..dfddb8f 100644
--- a/src/com/android/server/telecom/TtyManager.java
+++ b/src/com/android/server/telecom/TtyManager.java
@@ -49,7 +49,9 @@
 
         IntentFilter intentFilter = new IntentFilter(
                 TelecomManager.ACTION_TTY_PREFERRED_MODE_CHANGED);
-        mContext.registerReceiver(mReceiver, intentFilter);
+        mContext.registerReceiver(mReceiver, intentFilter,
+                android.Manifest.permission.MODIFY_PHONE_STATE,
+                null);
 
         updateCurrentTtyMode();
     }