The bracket can be mounted well, also on thicker handlebar tubes. The seat of the phone (with me: Galaxy Note 2) will first be very, you have to spend a bit of force to open the clip on the device. But - in the first test drive in the city with paving, etc. The phone has slipped by a few millimeters, and then eventually completely fall out. Fortunately, the driver was paying attention behind me ... I had it "on edge" and tilted slightly rotated (approximately 10 ° to the road), to view perpendicular to the display can. My phone is also relatively heavy ... Now I have the bracket to the microphone stand in the band and use the phone as a "teleprompter". So not quite useless ...