diff --git a/src/com/android/phone/PhoneInterfaceManager.java b/src/com/android/phone/PhoneInterfaceManager.java
index 0e909a6..46c80cc 100755
--- a/src/com/android/phone/PhoneInterfaceManager.java
+++ b/src/com/android/phone/PhoneInterfaceManager.java
@@ -8222,6 +8222,7 @@
 
     @Override
     public boolean isMvnoMatched(int subId, int mvnoType, @NonNull String mvnoMatchData) {
+        enforceReadPrivilegedPermission("isMvnoMatched");
         IccRecords iccRecords = UiccController.getInstance().getIccRecords(
                 SubscriptionManager.getPhoneId(subId), UiccController.APP_FAM_3GPP);
         if (iccRecords == null) {