I tested this K&F Concept magnetic car mount on different surfaces to see how well it holds up. On my textured Laminated work table top, it stayed securely in place for several days before slowly losing its vacuum grip. That’s actually a reasonable result for a suction-style mount on a slightly uneven surface. When I attached it to a smooth glass surface, it performed flawlessly — the mount held tight for days with no loss of suction.The magnetic head itself is strong, and it locks the phone in place with confidence. The 360° swivel and foldable arm make it easy to adjust viewing angles, and the overall build feels solid and precise. Based on my experience and what others have noted, the key factor in this mount’s reliability is surface type: it works best on clean, flat, non-textured areas like glass, glossy plastic, or metal.In short, this is one of the best well-made, strong magnetic mount that performs very well when used under the right conditions. It’s dependable on smooth surfaces, usable but less consistent on textured ones, and the magnet strength is more than sufficient for everyday driving or desktop use.