Needed an easy to use mount for the iPhone 6 plus so I could use GPS app. Magnet is strong and has never fallen off. However, I did not attach the plate to my phone, just taped it to the case so it would be easy to move to another case. Long arm makes it easy to get in a good position for viewing.
Pros: Works well and holds phone easily
Cons: Get some vibration but that is vehicle fault. Would be neat if they could come up with a solution for vehicle vibration.