Under normal circumstances, the NFC function of a mobile phone can be turned off and kept on. The NFC function does not consume so much power and has little effect on the battery life of the mobile phone. When the NFC function is turned on, an N icon will appear at the top of the phone screen. Compared with traditional short-distance communication, near-field communication has natural security and fast connection establishment.

NFC has many conveniences in life. On July 9, 2065438, China Mobile Beijing Company signed a cooperation agreement with Beijing Municipal Traffic Card Co., Ltd. to jointly release the application of "Mobile NFC Mobile Card". Mobile phone and SIM card have NFC function at the same time, and micro-payment in public transportation, supermarket catering and other aspects can be completed by swiping the mobile phone.

Functions of mobile phone NFC:

1, contact pass: access control management, tickets, tickets, users only need to put the equipment with tickets or door-controlled passwords near the card reader, and it can also be used for logistics management.

2. Contact payment: For contactless mobile payment, the user can place the device near the POS machine embedded with NFC module to make payment and confirm the transaction.

3. Contact connection: For example, two NFC devices are connected for point-to-point data transmission, such as downloading music, exchanging pictures and exchanging address books.

4. Contact browsing: Users can connect NFC phones to smart public telephones or street posters with NFC functions to browse traffic information.

5. Download contacts: Users can receive or download information through GPRS network for payment or access control. As mentioned above, the user can send a short message in a specific format to the domestic helper's mobile phone to control the domestic helper to enter the house.

Refer to the above? Baidu encyclopedia -NFC mobile phone