I had a friend buy an iPhone 8 the same day I bought mine. He bought gray, I bought silver. He was torn on which color to buy initially. His phone is virtually perfect though in all respects, but he likes my silver. He wants to know if it is somehow possible to buy a new silver phone and be able to open and inspect it prior to deciding to return his perfect gray phone. His thinking is if he can get a perfect silver one, then great, he will return the gray one, but because the gray one is perfect he is not particularly interested in giving it up in an exchange for an unknown - he wants to inspect the new phone first and if it checks out, cool, if not, he will just return it and stick with his gray one. He has Verizon device payment for the new phone he just bought. Is buying a SIM-free phone and paying full price up front the only way, thereby giving up his Verizon device payment if he decides the silver checks out and he wants to keep it? I can't imagine any other scenario where he can have two phones in his possession at once and be able to make a decision on which one to keep.