So, I am currently on a Sprint family plan, but I am going to switch myself off of Sprint onto my Brothers At&t family plan for the new iPhone. Can I still preorder? Because just as an experiment, I tried to click on a 3gs and then selected that I would be adding a line to the family plan, and it tells me I have to go in store to do it. So, I am wondering if when June 15th hits, I am not going to be able to preorder online because it will give me a similar message? I tried to call at&t for help but they couldn't understand what I was asking... And if I can preorder, what kind of information will I need from him to complete it? At&t did say I could add a line through the online account, but if I do that on June 15ht will I just be able to select the iphone as my preorder? My brother is a pain to get ahold of, and I don't wanna have to wait till the last minute and not be able to get ahold of him to deal with it. Any knowledge?