Samsung GALAXY NOTE 7 User Manual page 20

Reverse Charging
The included USB connector allows you to charge
another device through a USB cable. When connected,
your battery is used to charge the other device, and
Charging appears on your device.
You can also use the USB connector for transferring
contacts, photos, and other content from an old device.
For more information, see "Smart Switch" on page 12.
Getting Started 10 Assemble Your Device