diff --git a/telephony/java/android/telephony/TelephonyManager.java b/telephony/java/android/telephony/TelephonyManager.java
index fd475619ca15c..35b435d8dfb75 100644
--- a/telephony/java/android/telephony/TelephonyManager.java
+++ b/telephony/java/android/telephony/TelephonyManager.java
@@ -2418,6 +2418,10 @@ public class TelephonyManager {
      * <p>
      * The ISO-3166 country code is provided in lowercase 2 character format.
      * <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).
      * <p>