Universal Air Vent Magnetic Car Mount Holder for Mobile Phone Device. NEW DESIGN! More rotation and grip then other models! Very strong magnet, will hold phone in place even on a bumpy road (tested). Will stay in the vent firmly. The silicone arms/tips prevent it from sliding out (tested). Use the quick release button for easy removal. Two options to mount: Use thin round meta,l sticky on one side, plate to glue to your phone or its case OR use another metal plate (not sticky) and place it between the device and its case. This plate has soft fabric on one side, to protect the phone, and metal on the other. The magnet should not cause interruption to your smartphone. We didn't experience any problems with it on a test drive. GPS, phone functionality worked without interruptions.