TRB140 loosing connection to SIM card

the TRB140 is loosing the connection to the SIM card and reconnects to SIM randomly.


  • Lost connefction to Internal modem SIM card
  • Internal modem SIM card detected

Internal modem firmware version: EC25EUGAR06A05M4G_BETA1108_01.005.00.000

Is there any chance to solve this problem?



After the issue occurs, please navigate to System → Administration → Troubleshoot, and press Show on the System Log section. Copy the logs, remove any sensitive information and paste the logs in the next comment.
At the moment it’s hard to say what could be causing the issue. Make sure you are on the latest RutOS firmware version.
Additionally, visually inspect the SIM card to make sure it’s inserted correctly and the contacts are not damaged.

Best regards,

I’ve pasted the log to pastbin.

Best regards

I’ve updated to Firmware TRB1_R_00.07.04.5. I think the problem started after this, but I’m not 100% sure.
But after ths I’ve tried Firmware TRB1_R_00.07.04.4 and TRB1_R_00.07.04.3.

Thank you for the logs.
It seems like for some reason the TRB140 cannot obtain an IP address from your ISP. Could you try configuring a modem reboot in Services → Auto Reboot like so:

If the device still does not register, modem reboot can be changed to Device reboot.
Let me know if this helps.

Best regards,

we just use the TRB140 for receiving SMS and atm we are not using the mobile data connection.
The SIM card can not connect to mobile data.
Is this mandatory?

Best regards

This topic was automatically closed after 15 days. New replies are no longer allowed.