@DTS Engineer, Thanks Kevin for attention and reply on this issue. We are facing this issue in both case after power on - before unlocking device - here understood caused by device security as first authentication for device yet to done after restart and device might not have active network. In our case we can see 4G network symbol is shown on locked device screen. After unlocking device - in this case we can see network symbol 4G is shown on device but still waiting for up to 1/2 minutes App is not receiving VoIP push notification. If User opens App after 1/2 minutes then immediately App is getting VoIP push callback and App showing incoming call popup. In between Caller ends the call and incoming call popup become ghost call. If you guide or provide some more input on this two point about factors which are considered when push is sent from APNS to device, will help to understand issue. Your input in this case will really helps to understand or such scenarios. Appreciate your time, looking forward to hearing from you.

Its not working for me. I am using Xcode 14.3.1 . any suggestion ?