I looked on line today and saw an apple store had an available 64+ phone in stock. I was going to buy it, but my at&t account\line will not let me as it says i'm not available for an upgrade. I bought a 6 on launch day. However, my wife's line(she bought a 6 too) shows she has an upgrade available. If I go to the apple store can they use her upgrade for my line? I really don't want to buy online and then have her phone deactivated. The apple store won't open until 10am so I can't call them right now to ask.