So I just remembered this, and maybe it's causing problems for others and their carriers. If anyone remembers, the WHITE iPhone 5 wasn't released for several weeks after the iPhone 5 release. One of my lines ordered a white one, and now isn't eligible for an upgrade until October 10th. We are on AT&T by the way. If anyone is wondering why they can't upgrade, and they bought a white iPhone 5, then this may be the reason. Hopefully this helps someone!