Hey guys, So I have a family plan with two lines, both have iPhone 5 on them. I want to upgrade mine so here is what I was thinking: 1) Add a line and buy the new iPhone 5S 2) Swap numbers with my iPhone 5 and the new iPhone 5S plan 3) Cancel old line that had iPhone 5 on it and pay the $230 ETF Still would break even because I can sell my iPhone 5 for roughly $500 on eBay. Is this possible? Or would I have to cancel the new line and pay the $350 ETF? TIA!