NFC is activated but without function, what can I do?
The NFC radio standard is intended to simplify the connection of devices and for the payment of goods. If it does not work as expected, the following solutions can help:
As with almost all problems, the device should be restarted first. Disable NFC before and re-enable it after rebooting.
Metallic objects can interfere with signal transmission and should be removed if possible.
Protective covers or cases can also not be excluded as sources of interference, test the function without the case or cover.
Clear the memory of the NFC service. For example, on Android, you can find the settings by going to Settings -> Apps and using the Three Points menu to see system applications. Then tap NFC Service -> Storage -> Delete.
Make sure the device is not in flight mode.
Uninstall and reinstall the NFC app.
If all else fails, reset the device to factory settings to rule out any software issues.