Can an unlocked Iphone work on TMobles 3G Network?

[Rockky]

Really interested in looking into this. AT&T basically told me I'd have to live with dropped calls and get over it.
Any info here appreciated
Thanks

[Saverino]

I think T-Mob's 3G network and AT&T's 3G network work on different frequency's. Plus you'll have to get one of those turbo SIM things that supposedly work only for about a month.

[macgirl]

Savio is right - T-Mobile's 3G network is on the 1700mhz frequency, and the iPhone 3G can connect to 3G networks on 850mhz, 1900mhz, or 2100mhz frequencies.