If this $10 no-slip pad works with just friction, and without glue or adhesives. Slap one side somewhere on your car's dashboard and it's ready to take any phone or portable device you have. The pad undoubtedly works better the more horizontal you place it, but from the product images found here, it can hold a phone, coins or even glasses in an almost vertical position. The true test, however, will be if they can stay put during sharp turns.
