diff --git a/core/api/current.txt b/core/api/current.txt
index 8c84662735e63..19713cfebf6c6 100644
--- a/core/api/current.txt
+++ b/core/api/current.txt
@@ -41577,7 +41577,7 @@ package android.telephony {
     field public static final String KEY_SHOW_SIGNAL_STRENGTH_IN_SIM_STATUS_BOOL = "show_signal_strength_in_sim_status_bool";
     field public static final String KEY_SHOW_VIDEO_CALL_CHARGES_ALERT_DIALOG_BOOL = "show_video_call_charges_alert_dialog_bool";
     field public static final String KEY_SHOW_WFC_LOCATION_PRIVACY_POLICY_BOOL = "show_wfc_location_privacy_policy_bool";
-    field public static final String KEY_SIMPLIFIED_NETWORK_SETTINGS_BOOL = "simplified_network_settings_bool";
+    field @Deprecated public static final String KEY_SIMPLIFIED_NETWORK_SETTINGS_BOOL = "simplified_network_settings_bool";
     field public static final String KEY_SIM_NETWORK_UNLOCK_ALLOW_DISMISS_BOOL = "sim_network_unlock_allow_dismiss_bool";
     field public static final String KEY_SMDP_SERVER_ADDRESS_STRING = "smdp_server_address_string";
     field public static final String KEY_SMS_REQUIRES_DESTINATION_NUMBER_CONVERSION_BOOL = "sms_requires_destination_number_conversion_bool";
diff --git a/telephony/java/android/telephony/CarrierConfigManager.java b/telephony/java/android/telephony/CarrierConfigManager.java
index 70b51239b7143..b6944eb17b0cd 100644
--- a/telephony/java/android/telephony/CarrierConfigManager.java
+++ b/telephony/java/android/telephony/CarrierConfigManager.java
@@ -489,7 +489,10 @@ public class CarrierConfigManager {
     /**
      * Control whether users receive a simplified network settings UI and improved network
      * selection.
+     *
+     * @deprecated Never implemented. Has no behavior impact when override. DO NOT USE.
      */
+    @Deprecated
     public static final String
             KEY_SIMPLIFIED_NETWORK_SETTINGS_BOOL = "simplified_network_settings_bool";