diff --git a/telephony/java/android/telephony/TelephonyManager.java b/telephony/java/android/telephony/TelephonyManager.java
index 82949f29bf3b7..87c337da8ccb8 100644
--- a/telephony/java/android/telephony/TelephonyManager.java
+++ b/telephony/java/android/telephony/TelephonyManager.java
@@ -3134,8 +3134,10 @@ public class TelephonyManager {
                 return "LTE_CA";
             case NETWORK_TYPE_NR:
                 return "NR";
-            default:
+            case NETWORK_TYPE_UNKNOWN:
                 return "UNKNOWN";
+            default:
+                return "UNKNOWN(" + type + ")";
         }
     }