The Kindle 3G works globally, so it is UMTS. AT&T and T-Mobile are the possible data providers in the US. I guess this move means AT&T is who Amazon went with (

The Kindle 3G works globally, so it is UMTS. AT&T and T-Mobile are the possible data providers in the US. I guess this move means AT&T is who Amazon went with (which isn't surprising given that their coverage is better than T-Mobile's). Sprint provided the network for an earlier US-only Kindle.