diff --git a/telephony/java/android/telephony/SubscriptionManager.java b/telephony/java/android/telephony/SubscriptionManager.java
index a9521e3..5fb1bb5 100644
--- a/telephony/java/android/telephony/SubscriptionManager.java
+++ b/telephony/java/android/telephony/SubscriptionManager.java
@@ -791,6 +791,14 @@
     public static final int PROFILE_CLASS_DEFAULT = PROFILE_CLASS_UNSET;
 
     /**
+     * IMSI (International Mobile Subscriber Identity).
+     * <P>Type: TEXT </P>
+     * @hide
+     */
+    //TODO: add @SystemApi
+    public static final String IMSI = "imsi";
+
+    /**
      * Broadcast Action: The user has changed one of the default subs related to
      * data, phone calls, or sms</p>
      *