Need focus on app

[TheauLep]

Hey, I am testing the library and I see that it call perfectly when I am on the app or if I close my phone with app running in background (AppLifecycleState.paused).

But when I try to call when the app is running backward and that I am using my phone (AppLifecycleState.inactive), I need to go on the app do that the call makes it. It returns me : D/Caller : Message

Does anyone have an idea to resolve this problem so that my app can call even if the focus is not on it ?

Thanks in advance