Review: Sony Ericsson TM506
The TM506 does an apt job at most tasks. The basics, such as calling, organizing contacts, and accessing messaging services, are no brainers these days, and the TM506 conquers them easily.
With its 1700MHz HSDPA radio and Opera Mini browser (a separate download), using the Web in T-Mobile's 3G (yes, and even 2.5G) areas is speedy and fun. T-Mobile's 3G is pretty limited right now, though, so if that's the sole reason yuou're thinking of buying this phone, you may want to check to see that your market is covered first.
On the media front, the TM506 does well with its camera and video features, but music playback is less satisfying than on other Sony Ericsson models.
In sum, the TM506 is a worthy entrant in the the mid-range flip phone category on the T-Mobile network.