How long is Apple's return policy for the iPhone?
Apple updated its Retail Store Purchase Policy on March 12, 2014. The policy for iPhone returns now reads: "You may return your undamaged iPhone with its included accessories within 14 days of purchase for a full refund."
Customers who return their iPhone within the two-week time period will receive an exchange or full refund based on the method (cash, credit card) they used for the original transaction.