If you somehow managed to purchase a used Samsung Galaxy Note7 and you aren't sure how the global recall will work in your case, we've got some great news. Samsung will exchange your Note7, regardless of where you purchased it, even if you purchased it second-hand from eBay or Swappa. You won't need to contact your seller or anything like that. Samsung has stated that "Any customer who bought a Note7 (even used) should contact us directly at 1-844-265-6197 to exchange their device." So even if you did purchase a used Note7, you can contact Samsung directly at the phone number...
Source: http://www.gsmarena.com/psa_samsung_will_even_exchange_secondhand_galaxy_note7s-news-21038.php
