We have just updated the database to check network and country where samsung comes from.
Now you can find all the details regarding carrier, warranty, model. Supported are all Samsung from USA.
The only one thing you need, is the IMEI number, which you will find by pressing *#06# on keyboard Your device.
Go to Samsung warranty check FREE, enter IMEI number, and check Your Samsung device.

Marketing name;Galaxy S8+ 64GB (Verizon)
Network;Verizon Wireless Cell Phones
Warranty starts;2017-05-23