If you are meeting in person, perform these physical and software checks: Steps after buying a used iPhone - Apple Stack Exchange
Use this unique identifier to check if the phone has been reported lost or stolen on sites like Stolen Phone Checker. Essential Hands-On Checklist what to ask when buying a used iphone
Ask for the "Maximum Capacity" found in Settings > Battery > Battery Health . A percentage below 80% generally indicates the battery will need replacement soon. If you are meeting in person, perform these
When buying a used iPhone, your primary focus should be verifying that the device is not stolen or locked and ensuring the hardware is functional. Key questions and checks include confirming the , battery health percentage , carrier lock status , and repair history . Critical Questions to Ask the Seller When buying a used iPhone, your primary focus
Ask the seller to confirm they have signed out of iCloud and turned off "Find My iPhone". An iCloud-locked device is unusable without the original owner's credentials.
Ask if the screen, battery, or cameras have been replaced and if genuine Apple parts were used.