Does the 2-year contract start from the moment of activation only? And is there any reason the following would not work: I bought a Verizon iPhone with a 2-year contract, but my AT&T contract is not up yet for a couple of months. Could I use the sim from my old phone (either cut down to nano size or requesting a nano sim from AT&T) for two months and then activate the Verizon one? Or would I need to activate right away? Or would the phone even work on ATT without being activated? Wondering if it's the sim or the phone that gets activated. I definitely want the Verizon contract, just trying to avoid ETF with AT&T. Of course, I could have waited to buy the new iPhone till my contract was up, but my old 3s is dying. I have two active lines, one with AT&T (old iPhone), one with Verizon (a regular phone with no data plan), and both numbers will stay active. Thanks!