nRF9151 - %FEACONF 5 - what does "no cells are available" cover?

RE: nRF9151 - %FEACONF 5 - what does "no cells are available" cover?

Achim Kraus — Mon, 08 Sep 2025 10:19:58 GMT

[quote userid="114944" url="~/f/nordic-q-a/123716/nrf9151---feaconf-5---what-does-no-cells-are-available-cover/548040"]This feature is very useful for devices that may be out of coverage for long periods, e.g. tracking a container on a ship, [/quote]

Thanks a lot.

RE: nRF9151 - %FEACONF 5 - what does "no cells are available" cover?

Michal — Mon, 08 Sep 2025 09:39:28 GMT

I have some clarification on the functionality now:

Maybe this clarifies the terms used. “No cell found” means that no cells were found – neither suitable nor unsuitable. Therefore, the referred “%FEACONF 5” functionality is not related to the earlier discussed functionality where reject cause #12, #13 or #15 was sent by network. This is about deactivating UICC and the earlier discussed functionality was about deactivating the modem. To be noted that “no suitable cell found” often referred means that some cells may have been found, but none of them are suitable for connection (due to radio conditions or SIM subscription).

The referred functionality - enabled by %FEACONF=0,5,1 - will allow deactivation of the UICC when absolutely no cell was found even with a wider scan. The UICC deactivation will be done regardless of the card configuration for the deactivation. This feature is very useful for devices that may be out of coverage for long periods, e.g. tracking a container on a ship, and the SIM card configuration does not allow UICC deactivation. Even if the SIM card allowed the deactivation, some energy would still be saved because with this feature the deactivation is done a bit faster in certain scenarios.

Best regards,

Michal

RE: nRF9151 - %FEACONF 5 - what does "no cells are available" cover?

Michal — Thu, 04 Sep 2025 17:08:56 GMT

Thank you. Sorry for the delay, still looking into it.

Hopefully I will have some answers next week.

Best regards,

Michal

RE: nRF9151 - %FEACONF 5 - what does "no cells are available" cover?

Achim Kraus — Wed, 20 Aug 2025 17:01:41 GMT

Yes, AFAIK that's the minimum version to support "%FAECONF" with "5".

RE: nRF9151 - %FEACONF 5 - what does "no cells are available" cover?

Michal — Wed, 20 Aug 2025 17:00:25 GMT

Just to make sure: you are referring to MFW 2.0.2, right?

RE: nRF9151 - %FEACONF 5 - what does "no cells are available" cover?

Achim Kraus — Tue, 19 Aug 2025 05:37:01 GMT

Thanks!

RE: nRF9151 - %FEACONF 5 - what does "no cells are available" cover?

Michal — Mon, 18 Aug 2025 22:01:48 GMT

Hello,

I will check this internally and get back to you.

Best regards,

Michal