diff --git a/core/res/res/values/config.xml b/core/res/res/values/config.xml
index b068c1fe358ab..346339730865e 100644
--- a/core/res/res/values/config.xml
+++ b/core/res/res/values/config.xml
@@ -2300,21 +2300,6 @@
         <item>SUPL_MODE=1</item>
     </string-array>
 
-    <!-- If there is no preload VM number in the sim card, carriers such as
-         Verizon require to load a default vm number from the configurantion.
-         Define config_default_vm_number for this purpose. And there are two
-         optional formats for this configuration as below:
-         (1)<item>voicemail number</item>
-         (2)<item>voicemail number;gid</item>
-         The logic to pick up the correct voicemail number:
-         (1) If the config_default_vm_number array has no gid special item, the last one will be
-         picked
-         (2) If the config_default_vm_number array has gid special item and  it matches the current
-         sim's gid, it will be picked.
-         (3) If the config_default_vm_number array has gid special item but it doesn't match the
-         current sim's gid, the last one without gid will be picked -->
-    <string-array translatable="false" name="config_default_vm_number" />
-
     <!-- Sprint need a 70 ms delay for 3way call -->
     <integer name="config_cdma_3waycall_flash_delay">0</integer>
 
diff --git a/core/res/res/values/symbols.xml b/core/res/res/values/symbols.xml
index bbe5ebee472d7..81c5e2b1c3638 100644
--- a/core/res/res/values/symbols.xml
+++ b/core/res/res/values/symbols.xml
@@ -2264,7 +2264,6 @@
   <java-symbol type="bool" name="config_auto_attach_data_on_creation" />
   <java-symbol type="attr" name="closeItemLayout" />
   <java-symbol type="layout" name="resolver_different_item_header" />
-  <java-symbol type="array" name="config_default_vm_number" />
   <java-symbol type="integer" name="config_cdma_3waycall_flash_delay"/>
   <java-symbol type="array" name="config_default_vm_number" />
   <java-symbol type="attr" name="windowBackgroundFallback" />
diff --git a/telephony/java/android/telephony/CarrierConfigManager.java b/telephony/java/android/telephony/CarrierConfigManager.java
index 4dcc7d583b323..c19febfec99c3 100644
--- a/telephony/java/android/telephony/CarrierConfigManager.java
+++ b/telephony/java/android/telephony/CarrierConfigManager.java
@@ -285,6 +285,14 @@ public class CarrierConfigManager {
     public static final String KEY_SUPPORT_DOWNGRADE_VT_TO_AUDIO_BOOL =
             "support_downgrade_vt_to_audio_bool";
 
+    /**
+     * Where there is no preloaded voicemail number on a SIM card, specifies the carrier's default
+     * voicemail number.
+     * When empty string, no default voicemail number is specified.
+     * @hide
+     */
+    public static final String KEY_DEFAULT_VM_NUMBER_STRING = "default_vm_number_string";
+
     /**
      * Flag specifying whether WFC over IMS should be available for carrier: independent of
      * carrier provisioning. If false: hard disabled. If true: then depends on carrier
@@ -1042,6 +1050,7 @@ public class CarrierConfigManager {
         sDefaults.putBoolean(KEY_CARRIER_VT_AVAILABLE_BOOL, false);
         sDefaults.putBoolean(KEY_NOTIFY_HANDOVER_VIDEO_FROM_WIFI_TO_LTE_BOOL, false);
         sDefaults.putBoolean(KEY_SUPPORT_DOWNGRADE_VT_TO_AUDIO_BOOL, true);
+        sDefaults.putString(KEY_DEFAULT_VM_NUMBER_STRING, "");
         sDefaults.putBoolean(KEY_CARRIER_WFC_IMS_AVAILABLE_BOOL, false);
         sDefaults.putBoolean(KEY_CARRIER_WFC_SUPPORTS_WIFI_ONLY_BOOL, false);
         sDefaults.putBoolean(KEY_CARRIER_DEFAULT_WFC_IMS_ENABLED_BOOL, false);