TRB500 – Mobile signal but no internet connection

Networking Solutions
1

Hi,

I’m having an issue with my Teltonika TRB500 and would really appreciate some help to troubleshoot.

The device shows a good mobile signal and appears to register on the mobile network, but there is no internet connection for any devices connected to it.

What I’m seeing:

  • SIM is detected

  • 4G signal strength is shown

  • The unit shows as registered on the mobile network

  • However, there is no working internet connection.

What I’ve tried so far:

  • Spoken to Teltonika support by phone. They advised updating to the latest firmware, which I have done successfully, but the issue still persists.

  • Tried another network provider’s SIM card to rule out a carrier issue. I get the same behaviour: but 5G signal and registration, but no internet access.

  • Power cycled the TRB500 several times.

  • Removed and re-seated the SIM.

  • Confirmed that the SIMs work with active data when inserted into a smartphone.

Thanks in advance for any help.

2

Greetings,

For troubleshooting purposes, we will require more sensitive information from your end, such as the troubleshoot file, which may contain passwords, public IP addresses, serial numbers, and such. To avoid leaking this information, we have sent you a form to fill out, which you will receive in your e-mail inbox that you have registered your account with in the forums. In the Ticket ID field of the form, please enter the ID of this thread, which is 16409.

Best Regards,
Justinas

4

Greetings,

After updating the modem’s firmware, the internet connection started working.

Best Regards,
Justinas