I was thrilled about this unexpected bonus "feature". Mine (InfinniApps brand) works great even with the wireless power pack mod. It works even better than when I used the provided metal plate within the case of my old phone. It might rotate a bit if you have a very bumpy road but that is with the mod. If you use the magnetic mount without out anything on the back of the phone, you won't have to worry about it flying around if you happen to flip your car. (Not speaking out of experience)