Samsung USA warranty check
Do you own a Samsung device from American or Canadian market? Check if the device is under warranty.
Video instruction
Do you own a Samsung device from American or Canadian market? Check if the device is under warranty.

Service accepts all Samsung devices from American or Canadian networks.
Example

IMEI	358518070xxxxxx
Marketing name	Samsung Galaxy S7 active, 32GB, (AT&T), Green Camo
Model	SM-G891AZGAATT
Network	AT&T Cell Phones
Country	USA
Warranty starts	2016-05-24