diff --git a/overlay/packages/services/Telephony/res/values/config.xml b/overlay/packages/services/Telephony/res/values/config.xml
index d2dc836..3fc4e6d 100644
--- a/overlay/packages/services/Telephony/res/values/config.xml
+++ b/overlay/packages/services/Telephony/res/values/config.xml
@@ -16,4 +16,26 @@
 <resources>
     <!-- The package name for the platform carrier config app, bundled with system image. -->
     <string name="platform_carrier_config_package" translatable="false">com.google.android.carrier</string>
+
+    <!-- Allow handover from telephony calls to another ConnectionService. -->
+    <bool name="config_support_handover_from">true</bool>
+
+    <!-- Flag indicating whether the device supports RTT (real-time text) -->
+    <bool name="config_support_rtt">true</bool>
+
+    <!-- String indicating the package name of the device ImsService implementation for MMTEL. -->
+    <string name="config_ims_mmtel_package" translatable="false">org.codeaurora.ims</string>
+
+    <!-- String indicating the package name of the device ImsService implementation for RCS. -->
+    <string name="config_ims_rcs_package" translatable="false">com.android.service.ims</string>
+
+    <!-- This device supports the AudioManager Telephony audio device and output onto this
+         device using {@link AudioDeviceInfo#TYPE_TELEPHONY}.
+         This is used to support carriers which generate a recording tone to the remote party
+         when a call recording app is in use. -->
+    <bool name="config_support_telephony_audio_device">true</bool>
+
+    <!-- This device requires that emergency calls are placed over the default data SIM when
+         possible because GNSS SUPL can only be received from the network on data subscription. -->
+    <bool name="config_gnss_supl_requires_default_data_for_emergency">true</bool>
 </resources>