Advantage:
- Good better life (Sony seems to be the only company with 7+ hours talk time)
- Easy to upload pictures, movies, games
- Memory stick duo can be dirt cheap

Disadvantage:
- Display (compared to other phones, the display or screen is generally slightly inferior or at least nothing spectacular, which is something you kind of expect for a once top of the line phone)

- IMO, it’s a slightly ugly phone or you can say the outside appearance doesn't do the hardware justice

- Income call on some models is too soft