Hi Guys, Please we need your advise. We are currently using 3cx Phone system 12.5 sp2 and we are using the 3cx app (3cx phone for 3cx Phonesystem 12 ver.12.1.11) in our phones. All iPhone 5,6 and 6+. we have couple of issues . 1. when we receive any calls through the 3cx app, it just ring once and that's it. we don't know whether the call has been answered or not. 2. Also, if the phone is locked and if we are receiving any incoming calls, then the app will stop working. we reinstalled the app and still we are experiencing this issue. we need your valuable advises/suggestions to overcome this issue. Many thanks..!!