I got my M8 from tmo and am on that plan where I will own it in the end. But we are about to switch carriers this weekend because we're simply tired of tmo's bull and also want to try and save some money on our plan. My phone has been locking up and just hasn't been acting right for a little while now and I called tmo to have it replaced. They are working on replacing it under the factory warranty, but the problem is they don't show it as coming from them! (yet another reason we need to switch) I don't know how long this is going to take for them to replace this phone. So if we do switch carriers, will I still be able to get my m8 replaced under the warranty? I was thinking I could sell it once I get my new phone, but I won't be able to get anything for a defective phone.