What phone carrier is everyone going to activate/have activated their iPhone 7/7 plus on? Is it the same carrier you had before or are you switching? Why are you choosing the carrier - price? better signal? unlimited data? Etc..? I purchased a sim free iPhone 7 plus and am thinking of activating it on AT&T with a small amount of data plan. My current phone, an iPhone 5 is with Walmart family mobile which is through T-mobile. I used to be on AT&T a long time ago, then my family switched to T-mobile, then to Walmart family mobile. AT&T was the best carrier we had though in the past, but the most expensive. T-mobile doesn't seem to have a good connection, at least not where we live.