This is definitely the best universal bracket I've used, and for an awesome price! I own 2 BMWs (E46 sedan, E86 Z4 M), and have one installed in both for my iPhone 4 with bumper. For a universal mount, this bracket is extremely low profile and looks like it's made for the phone. It fits perfectly with the bumper on, and it also fits my BlackBerry Curve or Style without adjusting. Adjustments are simple, just slide out the arm out and move it to the next notch. The notch system is way more secure and sturdy than those spring loaded clamps, I really hate those bulky clamp mounts.