Magnetic air vent cell phone car mount, 2 for $6

After trying lots of different phone mounts for cars, the type I've settled on attaches to an air vent and has a magnet on it. You have to stick a thin metal plate on the back of your phone, but it's unobtrusive. Your phone won't slide off. This mount is by far the most convenient kind. Amazon has a sale on air vent magnetic phone mounts. This 2-pack costs $6.39 with free one-day shipping.