I have an Xperia XZs with Android 8. Lately I'm having problems while calling. When I start a call, the screen goes black immediately, and won't come back anymore during the call. The result is that when I'm in a menu where I need to chose a number, I can't, because the screen is black. I can't even hang up. Well, I can pull out the sim card, and that will end the call, but that means a restart.
I've installed a new dialer, and that seems to help a little, but the problem is still there.
Is there any way I can get my dialer back to normal? Is this a new bug? I updated recently.