Yes, you can buy AppleCare for a used iPhone, but it must meet specific eligibility requirements regarding its age and where it was purchased . Eligibility Criteria
The device must be in good working order and pass a remote or in-person diagnostic test. How to Check Your Status can i buy applecare for a used iphone
Under this newer subscription program, devices up to four years old may be eligible if they pass a diagnostic check. Yes, you can buy AppleCare for a used
Standard AppleCare+ must usually be purchased within 60 days of the device's original sale. can i buy applecare for a used iphone