After waiting all night in line for the iPhone 6 Plus, I received the unfortunate news that my Apple Store was not carrying any iPhone 6 Pluses for T-Mobile. I did know that Verizon phones were supposedly unlocked, but they didn't have the color/storage combination I wanted so I decided it wouldn't be worth the risk. Now, I'm still having trouble finding any stores that even received T-Mobile iPhone 6 Pluses; it seems the Apple Stores just aren't getting any in my area. Anecdotally, I also found out Verizon iPhone 6 (Plus)'s don't work with T-Mobile WiFi calling, so I made the right decision there. However, I found out supposedly the AT&T devices are also being sold unlocked, as long as they are bought without a contract. Since I cannot find any official T-Mobile versions, I thought this would be worth looking into. So, does anyone know for sure if the AT&T model is unlocked, and if it is, does T-Mobile WiFi calling work on it? If so, I'll just start looking for it instead!