The best and the cheapest holder I've ever had.

Is just a plastic / rubber part with spring, but it does the job better than imagined. Since the jaws are the right and left of grippy rubber, keeps my Ascend P6 with its straight rear wall and the only 6mm wide side flanks firmly as glued. The same should therefore apply to the iPhone 4/5.
I have not yet tried it, but I suspect that it concave back also keeps equipment sufficiently well.

The four split rubber holder for the ventilation slats is very tight so it should also be of thin lamellae easily maintenance.
I put him right in the middle because there cross the slats and the rubber holder on the vertical and horizontal louver will stop.

Since the width of the holder is the same as a single ventilation element in my BMW Z3 Coupe, the black holder fits well into the overall picture of the vehicle when a time is no phone in the holder.

First, I wanted to Kenu Airframe for 20, - buy and have found here luckily, these (very reasonable) which also has the advantage of round jaw. This has less contact area and the smartphone can be / central clamped deeper without the switch jammed on this page and / or blocked. In Kenu Airframe my P6 would very highly in the holder so that it are not in contact with the switches or comes in my case, the volume rocker.

The shipment of "Dog Gold" from China took in my case 12 days.

If he does not break the holder at a price of 3.59 a real bargain, and at the same time the best, simplest and smallest holder I could inspect it until now!