Yes! As long as the item is eligible for protection, you can add it to your plan, regardless of age or purchase location.
RECEIPTS: For items you purchased used or through a third-party marketplace platform, such as eBay or Offerup, request that an email be sent from the seller stating the purchase date, amount paid, and item description. This can count as proof of purchase, even for cash purchases.
NOTE:
Mechanical/electrical component failures are only covered for portable electronic devices and TVs purchased new and within 120 days prior to your account registration or anytime after you registered your plan. Receipts are required for this protection.
Older items ARE still covered for accidental damage and theft as long as they are undamaged and fully functional. Phones are covered for parts failures regardless of purchase date or if purchased used.