Welcome to the Community! :smileyhappy:
I found the problem, another user had posted he had a magnetic case (like rokform) part of screen where magnet is located was the dead spot. I replaced the magnet with a golf ball marker from golf divot tool (exact same size) and now screen works fine and phone still sticks to rockform magnet on dash.
If your using the rockform case with magnet inside. I popped out the magnet and used a golf ball marker, (they're the same size) & they're steel and phone still sticks to rockform magnet. Phone works normal now.