According to the encyclopedia of knowledge:
1, turning on the NFC function will also bring some security risks. Because NFC technology can realize short-distance communication and data exchange, if your mobile phone is turned on and unlocked, people nearby may exchange data with your mobile phone through NFC, such as illegally reading your credit card information. So I suggest you turn off NFC when you don't need it, which can improve the security of your mobile phone and save power.
2. Interference with other equipment. In some cases, turning on the NFC function may also interfere with the normal operation of other devices. For example, when using medical devices or mobile phones on an airplane, turning on NFC may interfere with the normal operation of these devices, thus bringing security risks.
3. Expose your privacy. When a mobile phone turns on NFC, it will read and write to the mobile phone, and read and write to bank cards and transactions, which may expose its privacy. It is recommended that you do not turn on the write function when setting.
4. Risk of funds being stolen. If our mobile phone is equipped with NFC payment function, we may face the risk of funds being stolen after being accidentally lost, because NFC payment function can make small payments without password. It is recommended that you set a confidential limit or turn off any confidential payment function to avoid this risk.