I got myself this mount for my mountain bike and am very satisfied. My S3 fits through the various foam inserts perfectly and without play into it, so that the operator of the display is easily possible through the protective sheath. The adjustability of the viewing angle is through the ball joint very well. The handlebar bracket itself is also very robust. In my case I have, however, the original lock nut against a "normal" swapped because my arm is very thick and conical. I need some more excitement. The original mother is eventually cracked up when tightening in its plastic case. But in normal, straight handlebars, I see no problem. There is a band here, which you can wrap around the handlebar and clip it into his pocket - so it is ensured that the device (should but the plastic of the bracket times yield) not free falls to the ground. I am already driven some tours and so have they fucked hard - the hardest and unebenste field or forest road, and cracks or other shocks have the holder did not mind - he kept clean its position. The drive through rain and violent splashing from below were not a problem - my phone was always dry. I highly recommend this mount for the S3 highly.