Telstra in Australia uses the 850 3G band as well as ATT. But not the 1900 band. So it’s possible to purchase a Telstra version and use it on ATT 850 3G. It is said that ATT is trying to migrate it’s entire network to 850 eventually.

Here is a LINK to some Telstra HD2’s.

Another thing a lot of people don’t know is that the Canadian wireless companies “Rogers” and “Telus” use the exact same 3G bands as ATT. 850 and 1900. So browse on over to their websites and check out what you could purchase then unlock…

Visit this LINK to the Tmobile webpage.

http://www.htc.com/www/product/hd2/gallery.html

http://www.htc.com/www/press.aspx?id=116092&lang=1033