For the question, what is NFC on your phone and what can you do?
A wireless technology that can read data between devices that support Near-field communication (NFC) technology, such as NFC-enabled WiFi routers with NFC-enabled phones, NFC-enabled car license cards, credit cards, and other NFC-enabled devices.
In addition to reading data, NFC technology can also transfer data between phones / devices (data transfer).
Simply turn NFC on and close the devices (4 cm = about an inch and a half or closer to that distance) NFC enables communication between two electronic devices over a distance of 4 cm (11⁄2 in) or less.
(Data rates ranging from 106 to 424 kbit / s) Data transfer rates will be between 106 kbit and 424 kbit.