How to test modem hardware ? (Receiving SMS malfunction)

Hardware Librem 5
1

Good morning,

Is it possible to do a hardware test of the modem? I have the impression that the malfunctioning antenna of my city can be damaged the modem: I no longer receive the SMS.

For those who want to know the details of my misfortune tests:

History is happening in France, in Agen.

I’ve been dealing with a strange problem for two weeks, my Librem 5 no longer receives SMS. On the other hand it can always send SMS and internet in 4G and WIFI works without problem. So I contacted my French operator (Free) who assured me that everything works on their side.

I asked the question on the Librem 5 French-language telegram channel to find out if there were similar bugs, but no one has this problem. So I reinstalled my Librem 5 of 0 with the Purism script and I didn’t put anything like profile to be the closest to a factory setting, but still no SMS reception.

So I will order a new SIM card to see (5 days waiting), but also having a PinePhone Pro on Mobian (new), I tried my current SIM on the PinePhone Pro and there, all the SMS arrived suddenly, on the channel. So I conclude that something is wrong with my Librem 5.

So another point to note: The main antenna of my city (Agen) and completely dysfunctional for 15 days, we can believe that it comes from there, but during my trips with the Librem 5 last week (Albi) with my old profile, the problem remained the same, still no SMS reception.

I’m going to do another test tonight with the Librem 5 with a fresh 0 installation and factory setting, in another city (Bordeaux) where the antennas work normally to see but it’s quite possible that it doesn’t change anything.

2

Perhaps this thread can help: I can no longer recieve sms messages

Your message buffer may be full.

You can interact with some functions of the modem with mmcli. Try:

sudo mmcli -m any --messaging-list-sms

This should list messages in your buffer that have not been fully received. Or so I understand it.

You can delete them with:

sudo mmcli -m any --messaging-delete-sms=[number]

Or you could try to read the data to a file with:

sudo mmcli -s [number] --create-file-with-data=/path/to/the/output/file

Deleting them should clear up the buffer and allow new messages to be received.

3

Maybe all you have to do is call your local DGSE and have them unblock your SMS?

4

Thank you so much aaronrolls !! :partying_face:

I actually had five blocked SMS on the waiting list.

I did the cleaning with the command, everything works now without problem! Great!!
I will now know what to do if it reproduces.

Have a very good day!!