Merge "Improved the network type to string" into tm-dev am: 0488b34b3e am: 29f744ac94

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17554301

Change-Id: I90ea3e82b2c6af162b420a467161dd4d3b71290c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

telephony/java/android/telephony/TelephonyManager.java

@@ -3227,8 +3227,10 @@ public class TelephonyManager {
                 return "LTE_CA";
             case NETWORK_TYPE_NR:
                 return "NR";
-            default:
+            case NETWORK_TYPE_UNKNOWN:
                 return "UNKNOWN";
+            default:
+                return "UNKNOWN(" + type + ")";
         }
     }