diff --git a/telephony/java/android/telephony/TelephonyManager.java b/telephony/java/android/telephony/TelephonyManager.java
index 976cd0c577e47..7477c3e29448a 100644
--- a/telephony/java/android/telephony/TelephonyManager.java
+++ b/telephony/java/android/telephony/TelephonyManager.java
@@ -2417,6 +2417,10 @@ public class TelephonyManager {
      * registered operator or the cell nearby, if available.
      * .
      * <p>
+     * Note: In multi-sim, this returns a shared emergency network country iso from other
+     * subscription if the subscription used to create the TelephonyManager doesn't camp on
+     * a network due to some reason (e.g. pin/puk locked), or sim is absent in the corresponding
+     * slot.
      * Note: Result may be unreliable on CDMA networks (use {@link #getPhoneType()} to determine
      * if on a CDMA network).
      */