diff --git a/telephony/java/android/telephony/CarrierConfigManager.java b/telephony/java/android/telephony/CarrierConfigManager.java
index 757939df0134b..6f10af1940a2c 100644
--- a/telephony/java/android/telephony/CarrierConfigManager.java
+++ b/telephony/java/android/telephony/CarrierConfigManager.java
@@ -3928,6 +3928,13 @@ public class CarrierConfigManager {
     public static final String KEY_USE_LOWER_MTU_VALUE_IF_BOTH_RECEIVED =
             "use_lower_mtu_value_if_both_received";
 
+    /**
+     * Indicates temporarily unmetered mobile data is supported by the carrier.
+     * @hide
+     */
+    public static final String KEY_NETWORK_TEMP_NOT_METERED_SUPPORTED_BOOL =
+            "network_temp_not_metered_supported_bool";
+
     /** The default value for every variable. */
     private final static PersistableBundle sDefaults;
 
@@ -4466,6 +4473,7 @@ public class CarrierConfigManager {
         sDefaults.putBoolean(KEY_DISABLE_DUN_APN_WHILE_ROAMING_WITH_PRESET_APN_BOOL, false);
         sDefaults.putString(KEY_DEFAULT_PREFERRED_APN_NAME_STRING, "");
         sDefaults.putBoolean(KEY_USE_LOWER_MTU_VALUE_IF_BOTH_RECEIVED, false);
+        sDefaults.putBoolean(KEY_NETWORK_TEMP_NOT_METERED_SUPPORTED_BOOL, false);
     }
 
     /**