4G connection used to be working OK.
last night It started to go slow and inserted a different sim card, I configured the fail over it didn’t work.
I tried with 3 different sim cards and the device will no longer connect to 3G OR 4G.
I reset to factory defaults.
It was running RUTX_R_00.07.11.3 and now I’ve downgraded to RUTX_R_00.07.10.2 for testing and still does not connect to any network.
I called the 4G company to verify and they confirmed all sim cards are working.
I put the sim into a tp-link MR600 and it works without any issues.
I have tried to manually add the apn, force to 4g, 3g or manually configure the provider and leave all settings to auto, still RUTX11 does not connect to 4G but the tplink mr600 works with same sim card it doesnt work on teltonika.
When the module cannot connect to the operator through the normal sequence, or there are restrictions on the SIM card itself, it may default to connecting to emergency services (similar to how phones can call emergency services without a connection to an operator).
To troubleshoot, please follow these steps:
Check the signal strength:
In the WebUI, go to Status → Network → Mobile to view the signal strength. You can refer to the Mobile Signal Strength Recommendations for guidance on optimal signal levels.
Ensure antennas are correctly positioned:
Make sure all antennas are screwed in properly and positioned at a 90-degree angle.
Verify the IMEI status:
There is a chance the device’s IMEI could be blocked by the operator. Please confirm this with the operator.
Check APN settings:
Ensure the correct APN is configured for connectivity and verify that the appropriate APN authentication settings are used (if required by the operator).
Check PDP type:
Navigate to Network → WAN → <mobile_interface> → Edit in the WebUI. Under mobile interface settings, there are three PDP types:
IPv4
IPv4/IPv6
IPv6
Make sure the correct PDP type is selected according to your cellular provider’s network (they may assign IPv4, IPv6, or both types of IP addresses).
