TRB140 not sending SMS / Reboot fixes it

Telematics Issue
1

I have been sending SMS from TRB140 for a few days and it has been working well.

This morning the SMS sending failed. When I logged on to WebUI, I noticed that it took a while to load. Then I tried sending SMS through Services/Mobile Utilities/Messages/Send Messages. The modem didn’t respond (see screenshot) and eventually a message popped up saying ‘Failed to send SMS’. Next, I rebooted the gateway and then everything worked smooth again.

  1. Is there any way to analyze the cause of this error? I am not seeing any anomalies in the Status pages and the Event Log.
  2. Is this a known issue?
  3. Is it recommended to schedule a reboot to avoid such a scenario?

Screenshot 2026-08-27 064806
Screenshot 2026-08-27 064806981×706 26.7 KB

2

Good day,

Please post your questions regarding TRB140 devices in separate Networks group forum.

Thank you for your understanding.

Here is the link: Latest Teltonika Networks topics - Teltonika Community

Best Regards,
Imran S