diff --git a/src/com/android/phone/settings/VoicemailSettingsActivity.java b/src/com/android/phone/settings/VoicemailSettingsActivity.java
index 04e8bf5..4d55421 100644
--- a/src/com/android/phone/settings/VoicemailSettingsActivity.java
+++ b/src/com/android/phone/settings/VoicemailSettingsActivity.java
@@ -24,6 +24,7 @@
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.Message;
+import android.os.PersistableBundle;
 import android.os.UserManager;
 import android.preference.Preference;
 import android.preference.PreferenceActivity;
@@ -31,6 +32,7 @@
 import android.preference.SwitchPreference;
 import android.provider.ContactsContract.CommonDataKinds;
 import android.provider.Settings;
+import android.telephony.CarrierConfigManager;
 import android.telephony.TelephonyManager;
 import android.text.BidiFormatter;
 import android.text.TextDirectionHeuristics;
@@ -250,6 +252,10 @@
             mSubMenuVoicemailSettings.setParentActivity(this, VOICEMAIL_PREF_ID, this);
             mSubMenuVoicemailSettings.setDialogOnClosedListener(this);
             mSubMenuVoicemailSettings.setDialogTitle(R.string.voicemail_settings_number_label);
+            if (!getBooleanCarrierConfig(
+                    CarrierConfigManager.KEY_EDITABLE_VOICEMAIL_NUMBER_SETTING_BOOL)) {
+                mSubMenuVoicemailSettings.setEnabled(false);
+            }
         }
 
         mVoicemailProviders = (VoicemailProviderListPreference) findPreference(
@@ -545,6 +551,23 @@
         }
     }
 
+    /**
+     * Get the boolean config from carrier config manager.
+     *
+     * @param key config key defined in CarrierConfigManager
+     * @return boolean value of corresponding key.
+     */
+    private boolean getBooleanCarrierConfig(String key) {
+        PersistableBundle b = PhoneGlobals.getInstance()
+                .getCarrierConfigForSubId(mPhone.getSubId());
+        if (b != null) {
+            return b.getBoolean(key);
+        } else {
+            // Return static default defined in CarrierConfigManager.
+            return CarrierConfigManager.getDefaultConfig().getBoolean(key);
+        }
+    }
+
 
     //*********************************************************************************************
     // Activity Dialog Methods