NFC Text Record Example Not Detected by Phones on nRF52840 DK (nRF Connect SDK v2.9.1)

[harryle]

Hi Nordic Community,

I'm testing NFC functionality on the nRF52840 DK development kit using the record_text sample from nRF Connect SDK v2.9.1 (which includes Zephyr OS v3.7.99). I've flashed the unmodified sample and confirmed it's running via the UART logs:

*** Using Zephyr OS v3.7.99-ca954a6216c9 ***
Starting NFC Text Record example
NFC configuration done

This indicates the example initializes correctly, but when I bring my phone (NFC enabled) close to the NFC antenna on the DK, nothing happens—no detection, no NDEF message popup, no events in NFC apps like NFC Tools or TagInfo, no event on the log of devkit. I've tested with three different Android phones (all confirmed to read standard NFC tags fine) and also tried iOS with similar results.

I've also flashed other NFC samples from the SDK without modifications, and none are detected by any phone. I'm building and flashing via VS Code extension, targeting the correct board (nrf52840dk_nrf52840).

Is there something I'm missing in the setup? Do we need any extra modification on firmware or hardware for NFC to work?

[Kazi Afroza Sultana]

Hello,

I have tried to replicate the issue from my side on nRF52840DK, NCS version 2.9.1 as same as yours. It seems same finding as yours.

But on upper version of NCS ( for example I tried on V3.0.2) it works. I have the following testing result accordingly

Have you tried with another upper version of NCS than v2.9.1?

Thanks.

BR

Kazi