nfc sensor not working iphone se 2020

Hi, I use my iPhone SE2020 to communicate with my Libre2 sensor. This stopped working a few days ago. Since then I have used my phone to pay by Applepay, however, today that stopped working too. I have updated to IOS16 and carried out a forced restart. But it's still not working - is there any way to test if the NFC antenna is working?