diff --git a/telephony/java/android/telephony/CellIdentity.java b/telephony/java/android/telephony/CellIdentity.java
index 6958d22bf5cc5..7655834445b2d 100644
--- a/telephony/java/android/telephony/CellIdentity.java
+++ b/telephony/java/android/telephony/CellIdentity.java
@@ -23,6 +23,7 @@ import android.os.Parcelable;
 import android.text.TextUtils;
 
 import java.util.Objects;
+import java.util.UUID;
 
 /**
  * CellIdentity represents the identity of a unique cell. This is the base class for
@@ -83,6 +84,13 @@ public abstract class CellIdentity implements Parcelable {
             mMncStr = null;
             log("invalid MNC format: " + mnc);
         }
+
+        if ((mMccStr != null && mMncStr == null) || (mMccStr == null && mMncStr != null)) {
+            DebugEventReporter.sendEvent(
+                    UUID.fromString("a3ab0b9d-f2aa-4baf-911d-7096c0d4645a"),
+                    "CellIdentity Missing Half of PLMN ID");
+        }
+
         mAlphaLong = alphal;
         mAlphaShort = alphas;
     }