How to turn off the bus card function of Xiaomi mobile phone

1, this cannot be deleted. 2, card brush, line brush, restore the factory settings will not affect the Xiaomi bus card, you can not get it. Unless the nfc module is changed.

Business development:

NFC (Near Field Communication) is a short-range high-frequency wireless communication technology. Devices using NFC technology (such as mobile phones) can exchange data when they are close to each other. This emerging technology is developed from the integration of contactless radio frequency identification (RFID) and internet technology. It integrates the functions of sensor card reader, sensor card and point-to-point communication on a single chip, and uses mobile terminals to realize mobile payment, electronic ticketing, access control, mobile identity recognition, anti-counterfeiting and other applications.