Fits my HTC SV very well. covers the bright white back and feels sturdy enough to protect it. It doesn't cover the ends or corners though so they could still be vulnerable. Overall would definitely order it again.
This was bought as a replacement for my old cheap fm transmitter as I wanted a way to charge my ipod too. However, after several attempts in different cars to get this to work I've given up and sent it back. The signal strength is so poor it was impossible to tune it in. On one journey I tried using this and my cheap version - cheap one worked brilliantly but on the same setting the Griffin was terrible. Avoid it!