Add labels for ConnectionServices

Add i18n-able labels for ConnectionServices since these will show
up in the Call Settings screens.

Change-Id: Ia88067fe20cc38acbe9fc7dc37ab2dcbf676711a
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 3333a9e..f08ce8b 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -1535,4 +1535,13 @@
 
     <!-- Title for button to not use WiFi calling. -->
     <string name ="choose_wifi_for_call_no">No</string>
+
+    <!-- Label for GSM connection service. -->
+    <string name="gsm_connection_service_label">Built-in GSM SIM card</string>
+
+    <!-- Label for CDMA connection service. -->
+    <string name="cdma_connection_service_label">Built-in CDMA SIM card</string>
+
+    <!-- Label for SIP connection service. -->
+    <string name="sip_connection_service_label">Built-in Internet calling</string>
 </resources>