Pros:- Interface is well done- Easy to transfer themes, MP3 ringtones, contacts, etc. via Bluetooth- Sony software makes it easy to create your own themes with their software- Was very simple to configure as a modem for my iBookCons:- Early version had a software bug that required the phone be restarted every couple of days (fixed February of '06)- Camera button cannot be locked, and often goes off in pocket (until the memory is full, then it's no longer a problem)