I have an iPhone X on the iPhone upgrade program, but the last payment will not be processed until 9/27, Which will presumably be after pre-orders for the new phones go live. Therefore, I assume I will need to make my last payment manually before pre-order night? Am I able to make that last payment now, or do you have to do it at the time of upgrade? If I go into the Apple Store app now and select my iPhone upgrade program contract, it says I can make the last payment when upgrading, but I didn’t know if I actually have to upgrade at the time of the payment Or if I can just make the payment to be upgrade eligible?