PC Magazine have published a review of the Sony Ericsson TM506 (T-Mobile) 3G phone. 'The TM506 is T-Mobile's first phone to support HSDPA on its unusual 1,700-MHz band, along with 2,100-MHz HSDPA and 850-, 1800-, and 1900-MHz GSM/EDGE. That means it's the fastest T-Mobile phone so far. It will roam onto AT&T's 2G network and foreign 3G networks, but it won't pick up AT&T's wide 3G coverage here in the U.S. Although it has the best voice quality of any T-Mobile 3G phone so far, the TM506 suffers from relatively low call volume—a deal breaker for some people. The phone just isn't very loud. Voices sound deep and well rounded, but some background noise comes through the microphone. The speakerphone is also quiet and is loud enough only for indoor calls, although it works with the flip closed. The vibrate feature is strong enough, and ringtones are sufficiently loud. You can even use your own MP3s as ringtones, a rare feature on carrier-provided feature phones.'