Just bought an iPhone 4 from my friend. I'm currently running on a 3GS. Of course, the 3GS has a SIM while the 4 requires a Micro Sim. Am I able to simply go into a AT&T store and request that they just transfer all my data plans and such into a Micro Sim? How does this work? EDIT: Sorry guys! I meant to post this in the Help section. Admins if you can, please move it there. Thank You!