Happy owner of a One + One, I needed a car holder suitable for 5.5 inches. This is expensive, but perfect. Good sucker. Quality product. Solid plastic. Easy to set up: a push button opens the back side grips, placing the phone, then push the grips. To open, simply press the push button. The bottom bracket keeps the phone in portrait mode, otherwise it will slip (grips are not powerful to descend blocked the phone that if enough ..) and place in the middle of the bottom bracket for connecting USB charging wheelchair .
I highly recommend, the price is high but the quality / practicality is there.