If the NFC on your Redmi Note 13 is not working, please try these steps to troubleshoot:
1. Check NFC settings to make sure NFC is turned on;
2. Make sure there are no physical obstructions or interference that affect NFC functionality such as phone case;
3. Clear cache of NFC or related applications such as Wallet;
4. Restart your phone to resolve temporary lagging. Turn off your device, wait a few seconds, and turn it back on;
5. Verify if the issue is with your phone or the NFC tag/device by testing with a different NFC-enabled device;
6. If the issue is due to the phone’s software, please check for the system updates and update the system to the latest version to check if the issue persists;
7. If the problem persists, consider a factory reset after backing up your data.
If none of these steps work, it could be some hardware problems. Please contact the local after-sales service center for further assistance.