I didn't really know where to post this but here is my question. I currently have a jailbroken 4GB I have had it since firmware 1.02, it is a legit Iphone with an at&t contract. I want to switch to an 8GB, I already have the 8GB but I haven't opened it because I wasn't sure if it was possible just to switch the sim card from one Iphone to another, and sync my contacts, and all my data? I know when I got the Iphone I just couldn't put my at&t sim card into it and not have to go through Itunes so I just want to make sure that there will be no problems. I am planning on jailbreaking the 8gb and upgrading to 1.1.3.