Hello,
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 assist further, please try the following 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 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).
-
By “swapped SIM cards around,” do you mean you have tested different SIM cards in the same router? If so, did you experience the same issue with all of them?
-
Test the SIM card in another device, such as a phone, to verify if it can connect to the operator normally.
-
Ensure that the SIM card is active and has an appropriate data plan.
-
Try setting a custom APN (or select “Auto” if no custom APN is set) and verify that the appropriate APN authentication settings are used (if required by the operator). In the WebUI, navigate to Network → WAN, and click Edit next to the mobile interface.
Best regards,