I bought the iPhone 7 on the iPhone Upgrade Program AND I have the Unlimited Choice AT&T phone plan. I pay about $30 a month to Apple on the phone but the AT&T plan has a $20 a month phone charge added to its bill. Do I need to call AT&T to remove the phone from the plan, it doesn't seem fair to pay them for the phone and also pay Apple too. Isn't that how the IUP supposed to work?