it took me two days to figure out how to put it but after that I'm very happy, it is stable, the maintenance of the phone is just perfect, nothing to do with the product 5 that move with the movements of the view, it is true that it lacks a user's manual to understand that the ping (with 2 cahoutchouc) is done to be pressed against the plastic of the dashboard. all the same need a Phillips screwdriver for assembly.