I now have the developer version of the phone on T-Mobile in the Baltimore, MD area. After getting a micro-sim the phone network came up right away. Data wasn't working, but all the setting pages automatically recognized T-Mobile. After about 5-10 minutes the "H' HSPDA network lit up and I was online. I actually still have the old T-Zones, not one of the current plans, but it still worked and I didn't have to manually enter any settings. I'm getting about 8 Mb/s down and 1 Mb/s up. I'm not sure if the old plan is slowing things down or not, but it seems like similar numbers to others on this forum, and it's faster than my N8 was getting by quite a bit.