This metal magnet phone mount can easily and securely hold your phone while in a car. The mount has 4 built-in magnets for a secure hold. The metal plates are provided to place directly on the back of your phone or phone case. The magnets hold best when they are on the exterior of the phone or case. Do not place magnet under a thicker case, as the magnetism will not be strong enough to hold. The clip is intended to be placed in your car vent.