Sim card not detected on MX68

[Nabil1]

Hi,

I have 3 MX68 that can not read Rogers sim card meanwhile more than 20 twenty MX read successfully the same sim card. 

All the MX are on the same software version. I do not know what to do

[Mloraditch]

If the same sim card works in another MX, have you tried to factory reset the firewalls in question? Something could be gummed up in the firmware or config and that should clear it out.

Otherwise I'd suggest calling support, they may be able to see more detailed diagnostics on sim card detection. There could be a bug they can identify and tell you if a different release may work.

[Nabil1]

yes already reset still no change.

[Inderdeep]

It should support 

https://documentation.meraki.com/MX/Cellular/3G%2F%2F4G_Cellular_Failover_with_USB_Modems#Compatible...

[rhbirkelund]

Did you try setting the APN manually?

MX19.1.3 has some bug fixes relating to improved reliability on cellular connections on MX68, as well as a fix to a rare MX18.2 regression making MX68 not able to establish cellular connection on the integrated cellular.

Perhaps you should consider moving to MX19.1.6 which has also been upgraded to Stable RC.

[ConnorL]

Looks indeed like the SIM isn't being detected, as indicated by the blank ICCID, IMSI & MSISDN. 

Ensure the SIM card is clean of any dirt/dust, and only insert the SIM when the unit is fully powered off (I.e. remove the power cord from the unit). Double check that the SIM works in an alternative device (such as a phone), if it works in an alternative device but not the MX, contact Support. 

[RaphaelL]

Have you tried rebooting the MX ?

Cellular on MX 18++ is very unstable and broken.

[Nabil1]

Yes and even upgrade it to 19.1.6

[RaphaelL]

Even after a reboot ( or multiple reboots ) the MX is not detecting the SIM ?

I have this issue on 200++ sites , but everytime I reboot the MX , it detects the SIM. Not all the time , but most of the time.

[Inderdeep]

That is really a pain but do you find any resolution on that 

[RaphaelL]

No. Cases are opened since early 2024 and bugs are still not fixed.