1) The product is too weak: I am little used, I handled carefully, not letting the beer permanently sun (in the glove box after each use), the fastening system laché: the jaws tighten and are not "free". The support is out of warranty, I opened it and, given the delicacy of the piece that has given (2) The power supplied for charging is not sufficient: As long as you use the navigation, telephone even when discharged. Certainly slower, but it will eventually die out as more battery (!). Boring ...
3) the jaws grip the phone about 1/3 of the height (test Lumia 920 and 1020). The phones go much beyond the support (~ 3.5cm): suddenly, when glue the bracket to the windshield, the top of the phone touches the windshield and forces to tilt the support (and therefore the phone) slightly forward ! Considering how the jaws hold the phone is alarming ...
4) The suction cup is made of a kind of sticky plastic that hangs everything lying around in the car and ended up not stick very well (how many times have I reattached the bracket while it threatened to fall, and my telephone!). Moreover, as said in other reviews, if you decide to stick it on the dashboard, it leaves traces (that disappear when rubbed with a little sponge): painful ...
I repeat, a tantalizing product on paper but wrong. Unworthy of NOKIA. Avoid!
For much less, invest in a good charger "cigarette lighter" (providing at least 2A) and a lambda phone holder.