diff --git a/res/values/strings.xml b/res/values/strings.xml
index 9f57d15..58f0d40 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -1965,10 +1965,20 @@
     <string-array name="wifi_calling_mode_choices">
         <item>Wi-Fi preferred</item>
         <item>Cellular preferred</item>
+        <item>Wi-Fi only</item>
     </string-array>
     <string-array name="wifi_calling_mode_values">
         <item>"2"</item>
         <item>"1"</item>
+        <item>"0"</item>
+    </string-array>
+    <string-array name="wifi_calling_mode_choices_without_wifi_only">
+        <item>Wi-Fi preferred</item>
+        <item>Cellular preferred</item>
+    </string-array>
+    <string-array name="wifi_calling_mode_values_without_wifi_only">
+        <item>"2"</item>
+        <item>"1"</item>
     </string-array>
     <!-- Wi-Fi Calling settings. Text displayed when Wi-Fi Calling is off -->
     <string name="wifi_calling_off_explanation">When Wi-Fi calling is on, your phone can route calls via Wi-Fi networks or your carrier\u2019s network, depending on your preference and which signal is stronger. Before turning on this feature, check with your carrier regarding fees and other details.</string>
diff --git a/src/com/android/settings/WifiCallingSettings.java b/src/com/android/settings/WifiCallingSettings.java
index da83cad..3602295 100644
--- a/src/com/android/settings/WifiCallingSettings.java
+++ b/src/com/android/settings/WifiCallingSettings.java
@@ -168,12 +168,20 @@
 
         CarrierConfigManager configManager = (CarrierConfigManager)
                 getSystemService(Context.CARRIER_CONFIG_SERVICE);
+        boolean isWifiOnlySupported = true;
         if (configManager != null) {
             PersistableBundle b = configManager.getConfig();
             if (b != null) {
                 mEditableWfcMode = b.getBoolean(CarrierConfigManager.KEY_EDITABLE_WFC_MODE_BOOL);
+                isWifiOnlySupported = b.getBoolean(
+                        CarrierConfigManager.KEY_CARRIER_WFC_SUPPORTS_WIFI_ONLY_BOOL, true);
             }
         }
+
+        if (!isWifiOnlySupported) {
+            mButtonWfcMode.setEntries(R.array.wifi_calling_mode_choices_without_wifi_only);
+            mButtonWfcMode.setEntryValues(R.array.wifi_calling_mode_values_without_wifi_only);
+        }
     }
 
     @Override