Im sure this has been asked, and i doubt this can officially be answered. But since the iPhone 4 uses a micro sim would i be able to just pop it in my ipad and do a quick settings change and yay free internet on my ipad. I did this with my current 3GS sim i cut it and put it in my ipad did a settings change. so would att be able to like "lock" the sim or somehow monitor if i put it in my ipad. thanks for taking the time and thanks in advanced.