When "NFC" is on, the phone is allowed to exchange data with any device in close proximity. You can also use "Touch & Pay" and "Android Beam". Your phone is allowed to make a payment or transfer data via NFC.
If your phone supports NFC, you can turn it on
Setting method:
realme UIs: Settings > Search "NFC" in the search bar > turn on NFC
realme UI R & Go & S & T & U Edition: not support
Note: Only some models support NFC, please refer to the actual usage.