I've had several car cellphone holders which NEVER held my phone without it wobbling or just falling down. This one is WAY beyond expectation. There's a round metal plate that sticks to back of your phone (if you have an iPhone, place the round metal plate ON TOP of the Apple logo on the back of the phone, if you use a home charger where you just sit your phone on it to charge). There's many ways to explain how much I like this holder for my car, but the word AWESOME simply sums it up. You can't go wrong with one!