I have not bought the Atrix......yet. I went last night to an AT&T store to check it out. I currently have an iPhone 4. I want to take my sim, with a sim card adapter and pop it into the Atrix. The AT&T rep said that the data will not work cause I have an iPhone data plan. Is this true? When I had my 3GS, I bought a Nexus One and everything was fine. I have a feeling this rep was wrong.