Fanatical Meat
Lifer
Which gets me back to my original point, I guess.
Does the unlocking make it so that AT&T cannot read what kind of phone you are using, so, that way, they don't turn on the data plan?
MotionMan
I used to work for the big T and no. Unlocking, jail breaking ECT does not hide the devices series number from the network. I'm pretty sure apple gets a cut of the data revenue from iPhones, hence they are tracked pretty good. Its a pain but you can constantly swap sim cards around multiple devices, that would slow it down but it would be a huge inconvience