Problem establishing LTE connection

RE: Problem establishing LTE connection

dejans — Fri, 17 Feb 2023 08:42:24 GMT

Hi Armand,

It is great to hear that your issue has been resolved.

Please note that the latest modem firmware version is not v1.3.3. We have recently released modem firmware v1.3.4.

Best regards,
Dejan

RE: Problem establishing LTE connection

A. Mullot — Thu, 16 Feb 2023 09:05:50 GMT

Hi,

The SIM was activated, new device certificate was uploaded.

But we found the problem. Turns out it was a modem problem. We had to upload through LTE Link Monitor the latest modem firmware (1.3.3), but the application firmware for the asset_tracker_ltem_v2 from the 2022-02-17 version. With the more recent ones, we had a message saying that some parts of the memory were not accessible from the LTE Link Monitor.

Anyway, asset_tracker_ltem_v2 works fine, I could finally add my device to the nrfcloud. I just flashed the exercise from the "interacting with the modem" chapter from the cellular IoT Nordic Academy, and it runs great.

Thanks for your help.

Kind regards,

Armand

RE: Problem establishing LTE connection

dejans — Wed, 15 Feb 2023 14:11:12 GMT

Hi,

[quote user="A. Mullot"]Finally, when I try to add my device to the nrf cloud, I get the following message : "There was an error adding your device: No device found for this id. The device has not yet been provisioned."[/quote]

This message states that your device has not been provisioned.

Please ensure that you have successfully added your device to nRF Cloud and activated iBasis SIM card as shown in this getting started guide. In addition, you could obtain new device certificates and get the latest modem firmware.

Best regards,
Dejan

RE: Problem establishing LTE connection

A. Mullot — Tue, 14 Feb 2023 14:57:54 GMT

Hi,

I am not sure to understand the point of provisionning again. Wasn't it done there ?

Furthermore, if we check the error codes from the REST API of the message I get when trying to add a device, no provisionning issue is mentionned :

I'll keep on searching and following your advices in the mean time.

Thanks.

Kind regards,

Armand

RE: Problem establishing LTE connection

dejans — Mon, 13 Feb 2023 14:10:35 GMT

Hi,

You can read more about provisioning in the nRF Cloud REST Device Message sample. There is also information on how to provision the device using nRF Cloud API. Another option would be to provision the device directly on nrfcloud.com by going to Device Management -> Provision Devices. For more information, you could read about Cloud Provisioning in the nRF Cloud documentation.

Best regards,
Dejan

RE: Problem establishing LTE connection

A. Mullot — Fri, 10 Feb 2023 14:01:09 GMT

Hi Dejan,

Thanks for your answer !

So yes, I did delete the device straight after updating the certificate.

Unfortunately, I don't know which network operator was used by the device. I just tested the connection, but did not use it any further because my application needed other functionnalities to be done before moving on to the connectivity part (which I can do now...). So I didn't use at all the LTE Link Monitor, I just checked on my nrf cloud account that the device was connected in the "device management" area.

I'm using the provided ibasis eSIM.

And sorry, I must not have been clear about the VM. I was already on a linux VM when I established the first connection, i just changed the VM for another one. I don't have nrf connect for desktop, nor any nordic files on my physical machine.

Finally, when I try to add my device to the nrf cloud, I get the following message : "There was an error adding your device: No device found for this id. The device has not yet been provisioned."

Kind regards,

Armand

RE: Problem establishing LTE connection

dejans — Fri, 10 Feb 2023 13:27:52 GMT

Hi,

After updating the certificate, the device should be deleted from nRF Cloud and then added again. It seems that you did this correctly.

Which network operator did your device connect to when it was able to connect from the physical machine?

Which eSIM do you use?

[quote user=""]I changed of virtual machine (my PC is under windows, and I use a linux VM) and can't establish a connection since.[/quote]

Was there a connectivity problem only on your virtual machine? Did you have this connectivity problem using your physical machine as well?

[quote user=""]From the nrf cloud, I can't add a new LTE device, because no connection is established.[/quote]

Could you show what happens when you try to add your device to the nRF Cloud? Do you get any message of unsuccessful operation as a result?

Best regards,
Dejan