otherwise wouldn't they just sell unlocked phones with no particular carrier association? No, not necessarily. Apple will sell more iPhones on one carrier pric

otherwise wouldn't they just sell unlocked phones with no particular carrier association? No, not necessarily. Apple will sell more iPhones on one carrier priced at 200$ (+ subsidy) than iPhones that work on all carriers for 750$. So I suspect that AT&T doesn't even pay close to the actual price difference.