The Holder for the phone is not exactly suitable for the Galaxy S2. In the recording, the phone wakelt very strong. There are at least 5 mm in the thickness of the air mount system for mobile thickness. The power consumption via USB is not given, since the prepared hole was punched right next to the USB port of the phone. The spring of the mounting bracket is too weak. Here a very slight pressure to the bracket enough to ovens. My impression is that the Holder has not been designed for this phone, but only a compromise of holding cup was found to another mobile phone manufacturer. Too bad.