I bought a on contract Verizon model iPhone 5, which is factory unlocked on November 20th, then I cancelled contract so I can go back on T-Mobile. I am back on T-Mobile, everything working perfect, except for the fact that 2 months later, I find out T-Mobile will release LTE on Band 4, which is basically 1 of the 2 bands that aren't on the iPhone 5 Verizon A1429 model. The AT&T A1428 Model has the Band 4. I was wondering if there is ANYWAY I can swap or switch them.. I tried to call AppleCare they said they can't because 30 days are up. the phone is basically NEW. I've used it with a back and a front screen protector and a heavy duty otterbox case. this is really ticking me off, having a LTE Compatible phone, and T-Mobile releasing LTE Advanced speeds up to 2GBPS, and I can't use it. Is there anyway?? I can switch it for a AT&T Model Locked, I wouldn't mind, I can buy the factory unlock from eBay. Is there any possible way I can get the AT&T Model, without risking selling on eBay or Craigslist and buying a new one. Thanks!