So I have an iPhone 4 with Verizon. I thought about adding a line to my account and ordering the 4S. Then I would switch the 4 and 4S so the new phone will be on my current line. I would then sell the iPhone 4 and use that money to pay the early termination fee. Would this work? Also, if I was unable to sell the iPhone 4 immediately, could I activate a "dumb" phone on the new account and switch to a family plan so I wouldn't have to pay the data line charge while I am waiting to sell the iPhone 4? Any thoughts would be greatly appreciated.