diff --git a/Signal/src/UserInterface/Strings.swift b/Signal/src/UserInterface/Strings.swift
index 02ceeef35..1419ff4ee 100644
--- a/Signal/src/UserInterface/Strings.swift
+++ b/Signal/src/UserInterface/Strings.swift
@@ -11,4 +11,5 @@ import Foundation
     static let callBackButtonTitle = NSLocalizedString("CALLBACK_BUTTON_TITLE", comment: "notification action")
     static let missedCallNotificationBody = NSLocalizedString("MISSED_CALL", comment: "notification title")
     static let missedCallNotificationBodyWithCallerName = NSLocalizedString("MSGVIEW_MISSED_CALL", comment: "notification title. Embeds {{Caller's Name}}")
+    static let callStatusFormat = NSLocalizedString("CALL_STATUS_FORMAT", comment: "embeds {{Call Status}} in call screen label. For ongoing calls, {{Call Status}} is a seconds timer like 01:23, otherwise {{Call Status}} is a short text like 'Ringing', 'Busy', or 'Failed Call'")
 }
diff --git a/Signal/src/view controllers/CallViewController.swift b/Signal/src/view controllers/CallViewController.swift
index 073be50d3..98b99fe47 100644
--- a/Signal/src/view controllers/CallViewController.swift	
+++ b/Signal/src/view controllers/CallViewController.swift	
@@ -560,8 +560,8 @@ class CallViewController: UIViewController, CallObserver, CallServiceObserver, R
     func updateCallStatusLabel(callState: CallState) {
         assert(Thread.isMainThread)
 
-        let text = String(format:NSLocalizedString("CALL_STATUS_FORMAT", comment: "Format for call status label"),
-                      localizedTextForCallState(callState))
+        let text = String(format: CallStrings.callStatusFormat,
+                          localizedTextForCallState(callState))
         self.callStatusLabel.text = text
     }
 
@@ -686,7 +686,7 @@ class CallViewController: UIViewController, CallObserver, CallServiceObserver, R
         guard let call = self.call else {
             Logger.error("\(TAG) call was unexpectedly nil. Terminating call.")
 
-            let text = String(format:NSLocalizedString("CALL_STATUS_FORMAT", comment: "Format for call status label"),
+            let text = String(format: CallStrings.callStatusFormat,
                               NSLocalizedString("END_CALL_UNCATEGORIZED_FAILURE", comment: "Call setup status label"))
             self.callStatusLabel.text = text
 
diff --git a/Signal/translations/en.lproj/Localizable.strings b/Signal/translations/en.lproj/Localizable.strings
index 277a8dfcf..0ed38407e 100644
--- a/Signal/translations/en.lproj/Localizable.strings
+++ b/Signal/translations/en.lproj/Localizable.strings
@@ -73,7 +73,7 @@
 /* Accessibilty label for placing call button */
 "CALL_LABEL" = "Call";
 
-/* Format for call status label */
+/* embeds {{Call Status}} in call screen label. For ongoing calls, {{Call Status}} is a seconds timer like 01:23, otherwise {{Call Status}} is a short text like 'Ringing', 'Busy', or 'Failed Call' */
 "CALL_STATUS_FORMAT" = "Signal %@";
 
 /* notification action */