T-Mobile MiFi Not Working (List of Potential Fixes + FAQs)

If you have been trying to use T-Mobile MiFi and have noticed it’s not working, you may wish to know some potential fixes to get it working again.

Well, I have been looking into this topic and have found several solutions to T-Mobile MiFi issue, so keep reading to learn more facts about how to fix it!

Why Isn’t T-Mobile’s MiFi Working in [currentyear]?

If you’ve noticed T-Mobile MiFi isn’t working, then you should try to unplug the MiFi and plug it back in, and then try to remove the battery and put it back in to see if that fixes the issues. You also can check your cord to make sure it’s plugged in and that there isn’t damage or frayed ends.

Do you want to know the full list of fixes for T-Mobile’s MiFi? If so, don’t stop reading because I have even more potential fixes for you below!

1. Remove the Battery & Reinstall It

One of the easiest ways to fix the MiFi is to remove the battery, wait a few minutes, and put the battery back in.

2. Restart the MiFi Device by Unplugging It

You may want to try to restart the MiFi device by unplugging it, waiting a couple of minutes, and plugging it back in to see if it will reset itself.

Furthermore, restarting devices regularly can help resolve any issues you’re having, since it can clear glitches, memory issues, and other common device malfunctions.

3. Check the Power Outlet

If your MiFi device isn’t working, check the power outlet to make sure that it’s working properly, and you should plug something else in to ensure there is power to the outlet.

4. Move the Device for a Better Signal

Your T-Mobile MiFi should have three bars of service for a reliable connection. So, if you only have one or two bars, your MiFi device may not work or may only work intermittently.

Furthermore, to get the best service, you should move the device as close to a window as possible, and ensure nothing is in front of the device interfering with the signal.

5. Make Sure the Internal Battery Is Charged

5. Make Sure the Internal Battery Is Charged T-Mobile

The T-Mobile MiFi device needs its internal battery to be charged to work properly, so you’ll need to make sure the charger is plugged in and that the internal battery is charged or charging.

Note that without a good internal charge, the MiFi device may not be able to pair with other devices, which could also be the reason for your issues with the device.

6. Check Cords for Damage

Check the power cords and other cords that could be plugged into the MiFi for damage.

In addition, make sure that the cords are plugged in securely because a loose connection could disrupt the MiFi.

7. Remove & Reinsert the MiFi SIM

Your T-Mobile MiFi needs a SIM card to work. So, if it’s not working, then try to remove the internal SIM and reinsert it to see if that fixes the issue.

For example, the SIM could become loose from the MiFi being dropped and that could cause the connection to the T-Mobile network to be lost and the device to not work.

Therefore, removing the SIM and putting it back in securely, checking for SIM damage, could fix the problem and get the MiFi back up and running.

8. Disable Antivirus Software

If you’re trying to use the MiFi with your PC or laptop, disable the antivirus software to ensure that there isn’t any interference causing the antivirus to block the MiFi connection.

9. Move Closer to Your MiFi

Sometimes the issue isn’t with the MiFi itself, but it’s because you’re too far away from the device to pick up the signal (you should be within 15 feet).

Therefore, if you’re 30 feet away, move closer to see if you can get the MiFi to work from a closer distance.

10. Ensure the Hotspot Feature Is Turned On

If you can’t connect to the MiFi device, check to ensure that the hotspot feature is turned on for the device you’re trying to connect to.

For example, if you’re trying to connect MiFi with a smartphone, then make sure you have the hotspot enabled, or that you’ve enabled it on a tablet or other device.

11. Contact T-Mobile

If none of the above fixes help your MiFi device, contact T-Mobile Customer Service and see if there is an accounting issue or other problem.

Also, you could just have a broken device, so T-Mobile is the best to contact for further troubleshooting or to see if you need to have the device replaced with a new one.

To know more, you can also read our posts on T-Mobile WiFi calling, T-Mobile MiFi, and does T-Mobile charge for hotspot.


If your MiFi device isn’t working, then try to check the cords to ensure they aren’t damaged and are securely connected and try to restart the device to fix the issue.

Additionally, you can remove and reinsert the SIM card while checking to make sure the SIM card isn’t damaged, and you can remove the battery and reinstall it as a possible fix.

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Mackenzie Jerks

Mackenzie is a freelance writer and editor, published author, and music enthusiast who holds a Bachelor of Science in Business Administration. When she’s not writing, Mackenzie is either wrapped up in a book, discovering new music, or introducing herself to a new fitness regimen.

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