Can't add dev kit to nRF cloud

RE: Can't add dev kit to nRF cloud

Øyvind — Mon, 30 Oct 2023 10:22:30 GMT

Yes, the O2 network has made some changes to the roaming policy in their network, starting end of October.

From the modem traces that provided I can see that there is a reject cause 15 - No suitable cells in tracking area. This EMM cause is sent to the UE if it requests service, or if the network initiates a detach request, in a tracking area where the UE, by subscription, is not allowed to operate, but when it should find another allowed tracking area or location area in the same PLMN or an equivalent PLMN.

I would reach out to O2 / Telefonica for more information. Please test with an O2 / Telefonica SIM

RE: Can't add dev kit to nRF cloud

AdrianH — Mon, 30 Oct 2023 10:14:39 GMT

Interesting - let's see what Øyvind comes back with.

RE: Can't add dev kit to nRF cloud

Dominic — Mon, 30 Oct 2023 09:51:25 GMT

Hey, I’ve just heard a rumour that Telefonica have revoked LTE-M roaming in the UK, so this might be the reason. I haven’t found any official announcement, and 1oT have not heard.

RE: Can't add dev kit to nRF cloud

Øyvind — Mon, 30 Oct 2023 09:48:34 GMT

AdrianH , sorry about the late reply. For some reason your answers have not been picked up the system and not notified me about them. I will have a look at the trace file. Make sure to ping me when answering, hopefully I will be notified

RE: Can't add dev kit to nRF cloud

Dominic — Sat, 28 Oct 2023 16:53:56 GMT

This might be similar to what we are experiencing (I have a ticket open), we have tried 1oT, 1nce and iBasis SIMs

We've haven't been able to connect to O2/Telefonica since October 22nd 2023 despite having full signal (RSRP -80dBm), incidentally we can connect to Vodafone when it is in range.

As far as I can see, the devices Attach and then immediately requests a detach with Cause: No Suitable Cells In tracking area (15). This has happened in multiple areas across the country, so something has changed with their network that the modem doesn't like. Here is our trace attached.

devzone.nordicsemi.com/.../trace_2D00_2023_2D00_10_2D00_28T15_2D00_41_2D00_10.945Z.mtrace

RE: Can't add dev kit to nRF cloud

AdrianH — Thu, 26 Oct 2023 10:56:14 GMT

Hi,

Please find the mtrace file attached. I have requested a trial pack of sim cards from O2 at they are the only provider of LTE-M in the UK.

devzone.nordicsemi.com/.../trace_2D00_2023_2D00_10_2D00_26T10_2D00_52_2D00_46.762Z.mtrace

RE: Can't add dev kit to nRF cloud

Øyvind — Thu, 26 Oct 2023 08:57:10 GMT

Could you please provide the mtrace file that Cellular Monitor collects? This way I can see what is going on in the modem.

The cellular monitor has a button with Refresh Dashboard on the left hand side. Can you please click on this after starting modem trace? This should provide the output with details for me to evaluate.

Thank you.

RE: Can't add dev kit to nRF cloud

AdrianH — Wed, 25 Oct 2023 18:10:02 GMT

I've tried everything you have suggested with no luck. The device finds the Telefonica LTE-M network, but won't register with it. In Cellular Monitor, the parameter Connection Evaluation Result sits at state 6 (not registered).

RE: Can't add dev kit to nRF cloud

Øyvind — Wed, 25 Oct 2023 12:30:02 GMT

Hello, from the output I can see that you are running Modem Shell. Could you try running the Asset Tracker v2 application? This should allow you to provision kit to nRF Cloud. The error you have in the serial monitor corresponds to bad message and invalid argument - nrfxlib/nrf_modem/include/nrf_errno.h

Under the nRF9160 DK product page you can find a precompiled firmware package under the Downloads tab. This will allow you to program a precompiled version of the Asset Tracker, there is also a debug version that has modem logging enabled under Debug.

Kind regards,
Øyvind

RE: Can't add dev kit to nRF cloud

AdrianH — Wed, 25 Oct 2023 10:16:28 GMT

Additional info from Serial Monitor:

RE: Can't add dev kit to nRF cloud

AdrianH — Wed, 25 Oct 2023 09:42:27 GMT

Hi Øyvind,

I have managed to get the Serial Monitor working. Can you please let me know the AT commands I need to execute to diagnose the problem?

RE: Can't add dev kit to nRF cloud

AdrianH — Tue, 24 Oct 2023 15:56:13 GMT

Hi Øyvind,

Thanks for your reply. I'm located in the UK - according to the map there should be coverage. I've attached the mtrace file. Sorry, I'm new to this and unsure how to check the other info.

devzone.nordicsemi.com/.../trace_2D00_2023_2D00_10_2D00_24T13_2D00_02_2D00_45.759Z.mtrace

RE: Can't add dev kit to nRF cloud

Øyvind — Tue, 24 Oct 2023 13:49:07 GMT

Hello,

Where are you located? You can find the iBasis coverage list here: https://www.nordicsemi.com/-/media/Software-and-other-downloads/3rd-party/iBasis-simplified-coverage-map-for-web.pdf. Are you able to test with another local SIM, to verify if there is a problem with the SIM?

Can you open the Serial Monitor to view log output? Also, please refresh dashboard to get a list of AT command output to share with me.

Could you share the mtrace file from the Celluar Monitor with me?

Thanks.

Kind regards,
Øyvind