I purchased the 256GB iPhone X because it's the only storage that was available on preorder day.one full price. I bought the phone full price on Verizon. Two return scenario questions: 1) Would I be able to walk into an Apple store and easily swap the phone for a 64gb X AND trade in my iPhone 7 towards the cost of the new phone? Would this cause any issues with Verizon? 2) Would I be able to "return" my current iPhone, but also trade in my iPhone 7 towards the price (instead of simply just getting an Apple gift card)?