I preordered my iPhone 7 plus on 9/9 but my new phone isn't expected to arrive until later 10/5. I ready received a box to turn in my iPhone 6 as part of the promotion.
How soon do I need to trade in my iPhone 6 by? Read something about within 30 days of order submission which means I will be late returning my old phone by 10/9 if it is within 30 days of submission.
From what was explained to me by 1 store manager and also a CSR, as long as the order was placed within the rebate period you should be fine. I'm in the same boat with m wife's 7 Plus matte black 128GB. Ordered on release day (finally convinced her it was worth upgrading) and have a 10/26 ship date. This was ordered in the store and we paid the installment plan on her 6 Plus off prior to doing it - after confirming that the rebate would still be valid for us.
Further, you will not have to ship your phone back until the new one arrives and is activated.