US couriers issue strict guidelines for returning your Galaxy Note 7
 

If you can't walk into your carrier's store to turn in a Galaxy Note 7 in person, you'll have to ask them for Samsung's fire-proof box and wait for it to come in. FedEx and UPS have announced that they won't ship out the phone unless it's inside one...

https://www.engadget.com/2016/10/13/...rn-guidelines/