diff --git a/telephony/java/android/telephony/CarrierConfigManager.java b/telephony/java/android/telephony/CarrierConfigManager.java
index cea4fafc7c180..3a4fe19233c03 100755
--- a/telephony/java/android/telephony/CarrierConfigManager.java
+++ b/telephony/java/android/telephony/CarrierConfigManager.java
@@ -2678,11 +2678,19 @@ public class CarrierConfigManager {
 
     /**
      * Controls hysteresis time in milli seconds for which OpportunisticNetworkService
-     * will wait before switching data to a network.
+     * will wait before switching data to an opportunistic network.
      */
     public static final String KEY_OPPORTUNISTIC_NETWORK_DATA_SWITCH_HYSTERESIS_TIME_LONG =
             "opportunistic_network_data_switch_hysteresis_time_long";
 
+    /**
+     * Controls hysteresis time in milli seconds for which OpportunisticNetworkService
+     * will wait before switching data from opportunistic network to primary network.
+     * @hide
+     */
+    public static final String KEY_OPPORTUNISTIC_NETWORK_DATA_SWITCH_EXIT_HYSTERESIS_TIME_LONG =
+            "opportunistic_network_data_switch_exit_hysteresis_time_long";
+
     /**
      * Indicates zero or more emergency number prefix(es), because some carrier requires
      * if users dial an emergency number address with a specific prefix, the combination of the
@@ -3428,6 +3436,8 @@ public class CarrierConfigManager {
         sDefaults.putLong(KEY_OPPORTUNISTIC_NETWORK_ENTRY_OR_EXIT_HYSTERESIS_TIME_LONG, 10000);
         /* Default value is 10 seconds. */
         sDefaults.putLong(KEY_OPPORTUNISTIC_NETWORK_DATA_SWITCH_HYSTERESIS_TIME_LONG, 10000);
+        /* Default value is 3 seconds. */
+        sDefaults.putLong(KEY_OPPORTUNISTIC_NETWORK_DATA_SWITCH_EXIT_HYSTERESIS_TIME_LONG, 3000);
         sDefaults.putAll(Gps.getDefaults());
         sDefaults.putAll(Wifi.getDefaults());
         sDefaults.putIntArray(KEY_CDMA_ENHANCED_ROAMING_INDICATOR_FOR_HOME_NETWORK_INT_ARRAY,