Yes, buys used iPhones through its Trade-In Program , typically providing payment in the form of a Best Buy e-gift card . While it is primarily a trade-in system, the gift card works like cash for any future Best Buy purchase. How it Works
Before handing over your phone, you must back up your data, turn off "Find My iPhone," and perform a factory reset. Maximizing Value Trade-In - Best Buy
Bring your device to a participating store for an immediate inspection and receive a gift card on the spot.
Devices must generally be in working condition with no major damage to qualify for the highest offers. Trade-In Options:
Ship your device using a prepaid label provided by Best Buy. Once verified, an e-gift card is emailed to you, typically within 7–9 days.