No receiving Voip on app terminate

here is the problem if i pass
PKPushRegistry(queue:DispatchQueue.main)
when i terminate application call is not showing up voip popup .

if i do this
PKPushRegistry(queue:DispatchQueue.global())
or i do pass background thread
im receiving call Voip banner but it automatically declined after 2 second.

Any help will be appreciated

@mininny do u have any idea about this ???

face the same issue.
Any update?

@MACAKM yeah i solved my issue in my case when voip invoked the application one of my code line was crashing… for detailed discussion u can ping me on junaid.umer@vizteck.com i will be very happy to help …