No its possible. ATT will recognize your imei number and bump you to a data plan. You have to buy a phone that is not in ATT system such as bell version of atrix. Other wise no chance.
Sent from my Nexus One using XDA App
AT&T recognizes the IMEI on all of their iphones. When I put my sim into my friends iphone, it asked me to update my data plan. Obviously, I did not...
It works on the Atrix, though I don't doubt if AT&T knew which phone I had, they would probably want me to upgrade. I asked a rep many years ago, they said I have some sort of legacy feature grandfathered in, but if I make any type of changes to my plan, I would lose it. I cannot remember what they call it. Thus I cannot purchase a phone with an AT&T contract. Pretty lame, but that has been my experience and what I have been told. Not all reps know what they are talking about.
I'm not here to argue with anyone. I know which plan I have, and I know I have an Atrix. All I did was take my sim from my old phone out and put it into my new Atrix and it works without complaining for me to upgrade my data plan.
However, I am not impress with the HSUPA speeds, and it seems everyone has the same issue whether they are on a $30 unlimited plan, or $20 medianet bundle.
I hope this helps, good luck guys!