diff --git a/overlay/frameworks/base/core/res/res/values/config.xml b/overlay/frameworks/base/core/res/res/values/config.xml
index 95e962d..3e137a3 100644
--- a/overlay/frameworks/base/core/res/res/values/config.xml
+++ b/overlay/frameworks/base/core/res/res/values/config.xml
@@ -31,5 +31,10 @@
         <item>"supl"</item>
     </string-array>
 
+    <!-- The RadioAccessFamilies supported by the device.
+         Empty is viewed as "all".  Only used on devices which
+         don't support RIL_REQUEST_GET_RADIO_CAPABILITY
+         format is UMTS|LTE|... -->
+    <string translatable="false" name="config_radio_access_family">GSM|WCDMA|LTE</string>
 
 </resources>