Hi, I checked upgrade eligibility because my iphone 5s is about 23 or 24 months old. ATT wireless site only shows ATT Next monthly prices for iPhone 6 so not sure what the options are for extending 2-year contract? I want the iPhone 6s+ but not sure what is the best way to keep my unlimited plan? I am going to give my 5s to mmy wife who has the 4s on her mom's plan. Are you buying the phone or making monthly payments via ATT Next Plan or Apple? I'd rather pay apple a monthly fee for the phone but not sure if that affects my unlimited plan? Thanks.