The steps to turn on NFC on your Apple phone are as follows:

Operating environment: iPhone 13, iOS 16 and so on.

1, in the phone settings to find and open the General option.

2, in the General interface, click NFC function.

3. Go to the NFC interface and turn on NFC.

Introduction of NFC principle:

NFC works in card mode, point-to-point mode and reader mode.NFC and Bluetooth are both short-range communication technologies, and both are integrated into cell phones. However, NFC does not require a complicated setup procedure, and NFC can also simplify Bluetooth connectivity.

What makes NFC slightly better than Bluetooth is that the setup procedure is shorter, but it cannot reach the low power of Bluetooth.

While NFC's maximum data transfer rate is 424 kbit/s, far less than that of Bluetooth's 2.1 Mbit/s.

While NFC's transfer rate and distance are not as fast and far-reaching as that of Bluetooth, the technology does not require a power supply. NFC technology does not require a power source, which makes it easier to use for cell phones or mobile consumer electronics, and it is also superior to infrared and Bluetooth transmission methods. As a consumer-oriented transaction mechanism, NFC is faster, more reliable, and much simpler than infrared, and does not have to be tightly aligned with infrared to transmit data.