Buying unlocked iPhone 7 right after release date
Good day friends! Let's say I want to buy an iPhone 7 right after release date before apple starts officially selling SIM Free devices. Would I be able to simply come to store and buy, for example, AT&T phone to use with my carrier? 'Cause I know they wouldn't be selling sim free phones in the first two weeks. Or do I have to purchase a plan as well and become AT&T costumer? In other words, I need an unlocked device now, and can I get one without waiting for the start of selling SIM Free devices. Thank you!
iPhone 5s, iOS 10