I bought the mount for my Ascend P7. It fits perfectly in the three arms and is simple to use and remove. The mounting in the ventilation slots I have tested on a Skoda Roomster and Skoda Octavia II. When Roomster I unfortunately had to notice that the seat does not absolutely tight. If the phone is used, the holder can easily slip to the left or right because the lock (small plastic hooks) only when narrower ventilation grilles (shallower depth of the slats) is stuck. But once the phone is used nothing wobbles. Even with uneven surfaces it sits properly and the holder does not wobble. One star deduction is only because of the imperfect locking. Anyway, I would buy it again.