Hi, I've heard of some troubles from people with MVNO's (virtual carriers that piggy-back on a larger network, usually pre-paid phones like TracFone, STI Mobile, Virgin Wireless, etc) having trouble porting their numbers over to their iPhone, even though AT&T's website shows the number to be portable. I have STI Mobile and would like to port my phone number over to my iPhone when I get it. I called STI and they said they don't have account numbers and I just need to give AT&T the password for my account. I've read online that it takes a long time to get numbers ported from MVNOs, and have heard of long hang-ups/confusion due to this when buying iPhone 3G at the Apple store. I really don't want to change my phone number. Does anybody have experience porting their number over from these carriers and any advice on how to go about it? Is it possible to just get an iPhone with a new number at Apple store and then port the old number over later just personally dealing with AT&T/previous carrier?