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Troubleshooting for the Inseego FX4100 cellular router.

On this page:

Device Placement

  • Ensure you have chosen a good location for your router:
    • Ideally on an exterior wall
    • Near a window but not in direct sunlight
    • On or above ground level (not in a basement)
    • Clear from obstructions and interference from other electronic devices
    • Outside of cabinets or locations that can get excessively hot
  • Try different locations to try to get a better signal. 
    • Move the router, then check the LED behavior:
      • The device LED is the middle LED with the bars.
      • It is blue for a great signal, green for a good signal, and yellow for a fair signal.
    • Use the Inseego app:  
      • Download the Inseego app from the App Store or Google Play.
      • Connect to the device's Wi-Fi and open the Inseego app. From the home page, select your device and select Go to location survey.
      • Follow instructions in the app to find the best place for your device.
      • It may take the router 1-2 minutes to boot up after it’s moved. 

 

 

LED Alerts

The FX4100 has an LED display with alerts.

  • To view the alert, select the display button to toggle through the menu options.
  • The last option is Alerts.
  • Press the display button for 3 seconds to review.
LED Display Message Troubleshooting  
Show display with x through routing arrows   Contact us for help.
Invalid SIM Contact us for help.
SIM Error
  1. Power off the device.
  2. Reinsert the SIM and try again.
  3. If issue persists, contact us for help.
No SIM
  1. Power off the device
  2. Reinsert the SIM and try again.
  3. If issue persists, contact us for help.
No Service

The device cannot detect the LTE/5G network.

  1. Change Network Technology to Auto to expand network search.
  2. Refer to Toggle Network Settings below.
No Mobile Network

No mobile networks are detected.

  1. Review device placement guidelines.
  2. Change Network Technology to Auto to expand network search.
  3. Refer to Toggle Network Settings below.
  4. If issue persists, contact us for help.
Updates Available
  • A firmware update is available.
  • You can install from the LCD screen or wait, and the update will be installed automatically or on the next device reboot.
Update Failed, No Changes
  • Reboot the device and the device will re-attempt the firmware update.
  • If this happens repeatedly, contact us for help.
90% Data; Fees Possible
  • This alert is set by the user and does not reflect T-Mobile Network data usage.
  • Change these alerts in the Web GUI under Data Usage.
  • To view T-Mobile Network Usage, refer to the Account Hub.
Data Limit Hit, Fees Apply
  • This alert is set by the user and does not reflect T-Mobile Network data usage.
  • Change these alerts in the Web GUI under Data Usage.
  • To view T-Mobile Network Usage, refer to the Account Hub.
Wi-Fi Is Off
  1. Reboot the router.
  2. If this doesn’t work, then turn Wi-Fi on by connecting to the router using an Ethernet cable.
  3. If this doesn’t work, then factory reset the router.
  4. If the issue persists, contact us for help.
Device Hot, Turning Off
  • The device will turn off.
  • Follow the device placement guidelines above. 
No 5G SA, Check Mode
  1. Change 5G Network Mode to Auto (NSA/SA) or NSA.
  2. Refer to Toggle Network Settings below.
No 5G NSA, Check Mode
  1. Change Network Technology to Auto (LTE/5G).
  2. Refer to Toggle Network Settings below.

 

 

Toggle Network Mode

Depending on your location, changing the Network Settings may help.

  • Option 1: If the router is online, change the setting using Inseego Connect.
    1. Select the device from the list, then Configure > Mobile Network > Carrier Settings.
    2. Ensure Network Technology is set to Auto.
    3. Change 5G Network Mode to NSA.
    4. The device will reboot.
    5. Use your phone to conduct a speed test.
    6. If the device is not faster, change 5G Network Mode back to Auto.
  • Option 2: Change settings using the Web GUI:
    1. On your phone or laptop, verify you are connected to the Wi-Fi of the Inseego FX4100 router.
    2. Navigate to http://192.168.1.1.
    3. Go to Settings > Advanced tab > select continue.
    4. On the Cellular tab, ensure Network Technology is set to Auto.
    5. Change the 5G Network Mode to NSA.
    6. The device will reboot.
    7. Use your phone to conduct a speed test.
    8. If the device is not faster, set 5G Network Mode back to Auto.

 

 

Check Antenna Switch

The FX4100 has a hardware switch.

  • On the back of the FX4100, there is a label SIM / External Antenna.
  • Remove the back plastic cover on the router, and ensure the switch is set to Ext Ant OFF.

 

Wi-Fi SSID

If you can’t see the Wi-Fi SSID, or you can see the Wi-Fi SSID but can’t connect.

  1. Verify you can see the Wi-Fi SSID from other devices.
  2. If you can't see the Wi-Fi SSID from any device:
    1. Reboot the router.
    2. If a reboot initially resolves the issue, but then it comes back, disable DFS (dynamic frequency selection) from the WebGUI (http://192.168.1.1) under Wi-Fi Settings.
    3. If available, connect to the router with an ethernet cable to validate Wi-Fi is turned on. 
      1. Navigate to http://192.168.1.1
      2. Select Wi-Fi. From the Settings tab, ensure Wi-Fi is enabled.
      3. From the Primary Network and/or Guest Network tab, ensure Broadcast primary network name (SSID) is checked.
    4. Factory reset the router by holding down the reset button on the back of the router for five seconds.
    5. If the issue persists, contact us. 
  3. If you can see the SSID from other devices, but just can’t with one:
    1. This is rare and can happen with older devices, especially printers.
    2. Go to the Wi-Fi settings in Inseego Connect and under 802.11 mode, select 802.11bgn.
    3. Try connecting with the device again.
  4. If you can see the SSID but can’t connect:
    1. If the device can see the Wi-Fi network but not connect, change the security type to WPA2 Personal or WPA/WPA2 mixed mode.
    2. If you continue to have issues, contact us.

 

 

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