diff --git a/overlay/frameworks/base/core/res/res/values/config.xml b/overlay/frameworks/base/core/res/res/values/config.xml
index df4fcbc..82c2545 100644
--- a/overlay/frameworks/base/core/res/res/values/config.xml
+++ b/overlay/frameworks/base/core/res/res/values/config.xml
@@ -297,4 +297,9 @@
 	<!--
     <bool name="config_proximityCheckOnWake">true</bool>
     <integer name="config_proximityCheckTimeout">400</integer> -->
+	<!-- 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</string>
 </resources>