diff --git a/res/values/strings.xml b/res/values/strings.xml
index 7943434..59b7ab9 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -87,4 +87,46 @@
           Default sound(Capella) in the notification summary.
           [CHAR LIMIT=40] -->
     <string name="default_notification_description">Default sound (<xliff:g id="default_sound_title">%1$s</xliff:g>)</string>
+
+    <!-- In-call screen: call failure reason (busy) -->
+    <string name="callFailed_userBusy">Line busy</string>
+    <!-- In-call screen: call failure reason (network congestion) -->
+    <string name="callFailed_congestion">Network busy</string>
+    <!-- In-call screen: call failure reason (client timed out) -->
+    <string name="callFailed_timedOut">No response, timed out</string>
+    <!-- In-call screen: call failure reason (server unreachable) -->
+    <string name="callFailed_server_unreachable">Server unreachable</string>
+    <!-- In-call screen: call failure reason (peer unreachable) -->
+    <string name="callFailed_number_unreachable">Number unreachable</string>
+    <!-- In-call screen: call failure reason (incorrect username or password) -->
+    <string name="callFailed_invalid_credentials">Incorrect username or password</string>
+    <!-- In-call screen: call failure reason (calling from out of network is not allowed) -->
+    <string name="callFailed_out_of_network">Called from out-of-network</string>
+    <!-- In-call screen: call failure reason (server error) -->
+    <string name="callFailed_server_error">Server error. Try again later.</string>
+    <!-- In-call screen: call failure reason (no signal) -->
+    <string name="callFailed_noSignal">No signal</string>
+    <!-- In-call screen: call failure reason (GSM ACM limit exceeded) -->
+    <string name="callFailed_limitExceeded">ACM limit exceeded</string>
+    <!-- In-call screen: call failure reason (radio is off) -->
+    <string name="callFailed_powerOff">Radio off</string>
+    <!-- In-call screen: call failure reason (SIM error) -->
+    <string name="callFailed_simError">No SIM or SIM error</string>
+    <!-- In-call screen: call failure reason (out of service) -->
+    <string name="callFailed_outOfService">Mobile network not available</string>
+    <!-- In-call screen: call failure reason (call denied because of current FDN setting) -->
+    <string name="callFailed_fdn_only">Outgoing calls are restricted by FDN.</string>
+    <!-- In-call screen: call failure reason (call denied because call barring is on) -->
+    <string name="callFailed_cb_enabled">You can\'t make outgoing calls while call barring is on.</string>
+    <!-- In-call screen: call failure reason (call denied because domain specific access control is on) -->
+    <string name="callFailed_dsac_restricted">All calls are restricted by access control.</string>
+    <!-- In-call screen: call failure reason (Emergency call denied because domain specific access control is on)-->
+    <string name="callFailed_dsac_restricted_emergency">Emergency calls are restricted by access control.</string>
+    <!-- In-call screen: call failure reason (Normal call denied because domain specific access control is on)-->
+    <string name="callFailed_dsac_restricted_normal">Normal calls are restricted by access control.</string>
+    <!-- In-call screen: call failure reason (Dialed number doesn't exist) -->
+    <string name="callFailed_unobtainable_number">Invalid number</string>
+    <!-- In-call screen: message displayed in an error dialog -->
+    <string name="incall_error_missing_voicemail_number">Voicemail number unknown.</string>
+
 </resources>