Troubleshooting: When a cellular router or gateway will not connect or has intermittent connection.
It's frustrating when your cellular router or gateway does not connect to the network.
You can tell you have connection problems if your connection LEDs are not as expected, flickering, or you have intermittent connectivity. Depending on the manufacturer the LED indicator may go on for up to 30 seconds then go off again.
If the SIM is installed properly and the APN is set, remove the SIM and test it in another device along with setting the correct APN in the other device.
If the other device connects, return the SIM to the new device and test again.
If the device still does not connect, contact your SIM provider to ensure your device and cellular services are compatible.
If your issue still is not solved, proceed to step #2