Hi…am using I magnet Holder for my smart phone form few weeks. The iMagnet Mount is only suitable for non-porous surfaces, such as glass, ceramic tiles, polished stone, heavily lacquered wood, and smooth plastic.
And at the same time it would be better if we avoid I magnet Holder On surfaces like lightly lacquered wood, walls, granite, and other non-porous surfaces that allow air to seep into the suction when mounted.
For more info visit imagnetmount.com/support/f-a-q/