Since the holder was now times since, I have tried it out and to my surprise sat phone bombproof in the holder :-)
The installation presented no problem and the bracket sits stably in the slats of the ventilation. So you need have no fear that this after some time once dissolves and the phone by a fall to harm comes (what with a suction cup to the windshield even provided can happen to anyone).
The bracket can be with one hand while driving from portrait to landscape and put back again, which is not so easily possible with a ball joint, as this but mostly 2 hands are needed.
Since you yes but his cell phone after a certain time usually exchanged for a newer, now I did not want to spend too much money for a retainer. Since the holder was really so reasonably priced, my expectations were at this also not particularly high and I thought to myself, if it breaks after a few times, at least as much is not lost. Meanwhile I use the bracket for over a year and it is still top. Hardly any signs of wear, although I use the mount almost daily, only the lock in the portrait / landscape now has a little more room, but still holds the position securely in the holder together with the phone is rotated.
The bracket has surprised me positively and absolutely Wentronic shows that you can also produce top quality for less money. Just a pity that this support is not offered for the iPhone 5 / 5C / 5S ... I'd make up my mind at once for it.