Review: Sony Ericsson C905a
In my opinion, the C905a is truly a camera before it is a phone. The camera software and tools are extremely powerful and show far more attention to detail then the rest of the phone, which is typical Sony Ericsson fare.
While phone call quality and signal performance were excellent, the music/media player is the same old PS3-style menu that's been around forever. The messaging services were improved with the addition of support for more IM clients, but the lack of POP3/IMAP email, a 3.5mm headset jack and social networking support
The hardware feels a little on the cheap side to me, and definitely detracts from the C905a's appeal.
However, if the camera features are what is most important to you, then perhaps you can overlook the C905a's shortcomings and be happy with your selection. For anyone else, I'd recommend looking at other AT&T handsets.