Considering that AT&T’s C810 was called the Pantech Duo, we might as well call their new C820 model ‘Pantech Duo 2′. Not many details were disclosed on the Federal Communications Commission website, but we can figure it has WCDMA 850/1900 (AT&T’s 3G) and that it will use the Windows Mobile platform, like its predecessor. It’s still way too early to know anything about the release date or price.