Merge "[Settings] User with restriction should avoid from having entries through Settings search"

src/com/android/settings/network/telephony/MobileNetworkUtils.java

@@ -49,6 +49,7 @@ import android.os.Bundle;
 import android.os.PersistableBundle;
 import android.os.SystemClock;
 import android.os.SystemProperties;
+import android.os.UserManager;
 import android.provider.Settings;
 import android.telecom.PhoneAccountHandle;
 import android.telecom.TelecomManager;
@@ -114,6 +115,23 @@ public class MobileNetworkUtils {
     public static final int NO_CELL_DATA_TYPE_ICON = 0;
     public static final Drawable EMPTY_DRAWABLE = new ColorDrawable(Color.TRANSPARENT);
 
+    /**
+     * Return true if current user limited by UserManager.DISALLOW_CONFIG_MOBILE_NETWORKS.
+     *
+     * Note: Guest user should have this restriction through
+     *       GuestTelephonyPreferenceController.java.
+     *       However, it's not help with those devices upgraded their software.
+     */
+    public static boolean isMobileNetworkUserRestricted(Context context) {
+        UserManager um = context.getSystemService(UserManager.class);
+        boolean disallow = false;
+        if (um != null) {
+            disallow = um.isGuestUser() || um.hasUserRestriction(
+                    UserManager.DISALLOW_CONFIG_MOBILE_NETWORKS);
+        }
+        return disallow;
+    }
+
     /**
      * Returns if DPC APNs are enforced.
      */