Apple has shortened the length of time allowed for iPhone returns to match the rest of its devices. Pervious, iPhones had a 30 day return limit, but that has recently been changed to 14 days. Customers who return their phones within that time frame with original packaging will not be charged a restocking fee.
iPhone Return Policy
If you are not fully satisfied with your iPhone purchase, you can return your undamaged iPhone to the Apple Online Store (1-800-MY-APPLE), or to a U.S. Apple Store, within 14 calendar days from shipment for a full refund. If you return your iPhone within 14 calendar days from shipment, you will not be charged a restocking fee. Your iPhone must be returned in the original packaging, including any accessories, manuals, and documentation. Read more