The holder is fixed with a suction cup on the windshield. In addition, a plastic plate is provided which has an adhesive surface, so that you can eg stick on the dashboard. The holder can then be attached by suction cup on this disc. This is probably useful if the suction cup would not otherwise hold on dashboard.
The basic function is fulfilled: the phone is securely in the cup and the holder sits securely on the windscreen. With a ball joint, which is also known navigation systems, the mobile phone can be tilted and swiveled as desired. Thus portrait and panoramic position are possible.
Big plus is the built-in USB connection: you can download the mobile phone without having to plug in this cable separately. At the holder a spiral cable is fitted with a USB-A connector. A power adapter for the cigarette lighter is supplied, so you can start here. The only drawback is that the cable is firmly attached to the holder and can not be exchanged. Whether one likes spiral cable, is a matter of taste.
The design is well thought out: with plugged mobile phone the buttons remain accessible on the housing side of the Galaxy S3, the three buttons below the screen are not covered and can be well served. The headphone jack is also free. The phone's camera can be used for shooting out of the car. Here, the mobile phone can be placed so that the holder does not come into the picture.
All in all, recommended. A deduction of points there, because the cable can not be replaced.