When you need to use your phone to navigate, the safest bet is to have it mounted to something stable, at around eye level, in a way that doesnt obstruct your view, so that you can just scan from the corner of your eye as needed. All well and good, but when your phone has a strap, or a Pop Socket, or a ring on the back, or whatever, most of these phone holders wont keep things secure, and your phone will jump right out, probably at a very inopportune (at best) and unsafe (at worst) time.This holder is a home run. Its designed in a way that makes sense to hold a phone steady and secure, regardless of any strap mounted to the back of it. My phone, Otterbox, and MoMoStick phone grip not only fit into this holder perfectly, but they fit SECURELY. I op checked this with a 75 mile trek in the car and it was a miracle. Before it arrived, I had my old phone holder rigged up with some hair bands to keep it in place, which of course blocked half the screen, defeating the purpose.So, if you read reviews because you are looking for a new phone holder for your car because youre in the same boat I was in, I give this one a glowing review.