So weird question. I signed up for AT&T and got the iPhone 6 on launch. Now that I see T-Mobiles plans I'd like to move over. My questions are: Can I just port my number over to T-Mobile and have them use my AT&T iPhone 6 as a BYOD? I'll pay my own ETF which works out since I don't have to buy a T-Mobile phone. Or is it better for me to just port over to T-Mobile, let them pay my AT&T ETF and then trade in my iPhone 6 that's on AT&T and use that credit to buy a T-Mobile version from them? Thanks for the helps dudes!!!!