I listen to soundbooks, an have an app from the book supplier (Storytel). If I close all apps and go sit in my car, the phone connects to my phone via Bluetooth. When pressing Play (car button) the music app on the phone is started. I then have to open the phone, find the book app and press play on the phone to start listening to the book. I can not find out how to make Storytel the default app. In setting, default apps, there is no option for media player. In the app itself, there is no option for making it default. Anyone?