FWIW, T-Mo's website lists the Samsung Galaxy Tab 7.0 Plus as supporting 850/1900 bands however the box only lists 1900. I was able to get 5.9Mbps on speedtest using AT&T Media Net plan. I also have a T-Mo Defy, which supposedly only suports 850, but both devices support 3G in my area. Some possible issues would be its bump in size, 7" screen, but surprisingly still fits in "some" pants pockets (front and back). Also, the screen is only 1024x600 and possibly more of an issue is that it does not work as a phone out of the box...some SIP client, Skype-like app, or getting the phone.apk to work would be required for calls. I'm using Skype-in (forward calls to Skype #), and Skype-out (masks outgoing calls w/my cell's #) for phone service, @ $6/mo. for unlimited calling. So for the vast minority looking for a "big phone", keeping tthat MediaNet plan, and worried that AT&T has the unlocked version's IMEI, take a look at the Tab 7.0.