Here's the quandary I'm in and I'd appreciate some wisdom and insight. My kids are getting to the age where they'll be getting phones. We were planning on getting them phones for their birthday (in January). I noticed with T-Mo, I can get 4 lines for 120 dollars and each line gets 10GB of data. That promotion ends on 09/08. I'm currently under contract with ATT with two lines but with T-Mo, I basically get 4 lines for what I'm paying ATT for two lines, so to me its a no brainer to switch - my plan is to buy a couple of used phones on swappa for the kids. Apple is presumably rolling out new iPhones later in the month. I don't feel like buying new phones at the very cusp of a new model. Another alternative is to eat the two ETFs (total about 400) myself and unlock the phones to use on T-Mo, and then sell them after the 6s rolls out. One question comes to mind with that option, do I get 3G, 4G, LTE with an ATT phone on T-Mo? If I wait beyond the promotion, then I'll be paying 140 dollars a month for 3GB of data per line not 10GB per line. I don't know how often they have these sort of promotions but is it worth rolling the dice to see what they might roll out for the Christmas buying season?