"Not sure how that works"... That was the response i got for my inquiry about an upgrade.. Read the fine print on that iphone forever business first.
**UPDATE**
Fun fact: if they tell you that you need a down payment for the iphone forever program and then say that if you return the phone in good condition upon a new iphone release, that the down payment will roll over to the new phone, its a straight up lie. Dont let these people screw you over like they did to me. $50K a year with a great payment record will still require a $150 down payment apparently. Read the fine print, or dont... Its your fault just like it was mine for trusting some asshole that just wants the sale. Best of luck future customers.