The SIM card is definitely plugged into the device and I am wondering if it may be an issue of the modem not being in the correct mode to detect the SIM card? I am running Ubuntu Server 16.04 and have just updated the modem to the latest firmware version and custom Telstra NVU. I am using a Telstra…

could this be hardware issue on SIM slot?

This is unlikely as it had been previously working on this same device a while ago. I will investigate using a different device but in the meantime, is there any other ways that I can check if the SIM card is recognised or not? For example if I unplug it and plug it back in is there any other way to…

is that all SIM cards behaves the same? Or just one SIM card being tested?

I have tested multiple SIM cards, even my own personal one that I use daily on my phone but still with the same results. I have also tried to use a standard SIM card compared to a micro SIM card with the standard adapter but still with the same results. I even tried having a SIM card in both SIM car…

seems the SIM pin of the MC module has some problem. what is the return of “AT+CFUN?” and “AT!PCINFO?”

sudo mmcli -m 0 --command='AT+CFUN?' response: '+CFUN: 1' sudo mmcli -m 0 --command='AT!PCINFO?' response: 'State: Online LPM force flags - W_DISABLE:0, User:0, Temp:0, Volt:0, BIOS:0, GOBIIM:0 W_DISABLE: 0 Poweroff mode: 2 LPM Persistent: 0'

seems nothing wrong… I can only guess the SIM pin of the MC module has some problem.

Ok thank you for your help, I will investigate the hardware. Do you also know why I would have lost my available cdc-wdm1 and 2 ports when running: sudo mmcli -m 0 after completing a firmware upgrade and updating the ModemManager package, and and idea of how I would recover them? They were previou…

normally these port should be available if the two RMNET interfaces are set in AT!UDUSBCOMP. you can double check by AT!ENTERCND="A710" AT!UDUSBCOMP=? AT!UDUSBCOMP?

Hi jyijyi, Here is the output of the following commands, and also attached is the output of the ModemManager service logs which I am unsure what these errors mean and could they relate to why the modem is not detecting the SIM card perhaps? Do you have any idea based on these responses and logs? T…

Unable to detect SIM card on MC7304

IoT Modules MC/EM Series

ehtesham.khan July 8, 2024, 12:58am 22

Hi Jyijyi,
Can the power Management settings on the CentOS make the SIM power down and we can get the error SIM Missing?

EM9291 how to enable QMI mode?

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Unable to detect SIM card on MC7304

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