So I have a family plan with three phones. The main line is up for an upgrade, the other two aren't (one dumbphone and my iPhone 4 is on the other). I want to upgrade the main line to an iPhone 4 (16GB) and pay the $199, wait a few days, call AT&T tell them I dropped it or it fell in a pool or something and is completely broken and have them take off the data plan and add my old non-smartphone back on to that line. That way, I can turn around and sell it on eBay for pure profit (asking price is $700+) which would translate to around $500 of profit. Do any of you see any flaws in this plan? I know that my upgrade eligibility would be used up and pushed forward a year but besides that is there really anything that could go wrong?