How to fix Galaxy Note9 “Not Registered On Network” error

Hello Android fans! In this troubleshooting episode, we try to fix “Not Registered On Network” error on Galaxy Note9. If you experience this same bug on your own Galaxy, learn how to deal with it below.

How to fix Galaxy Note9 “Not Registered On Network” error

“Not Registered On Network” error is a common network disruption across many devices. It can happen out of nowhere, or it can be a result of a device fault. Troubleshooting this bug is not straightforward so you have to do a number of steps to identify where the issue originates. To get us started, here’s what you must do:

Refresh the device. Network problems are sometimes fixed by doing a simple solution: restart. If you haven’t tried this troubleshooting step yet, make sure to do it as your first task. You want to ensure that the phone’s RAM is cleared and the system is restarted in general. With older devices, this is done by removing the battery. Since your Note9 does not have a removable battery pack, what you can do is to simulate its effects. Here’s how it’s done:

  1. Press and hold the Power + Volume Down buttons for approximately 10 seconds or until the device power cycles. Allow several seconds for the Maintenance Boot Mode screen to appear.
  2. From the Maintenance Boot Mode screen, select Normal Boot. You can use the volume buttons to cycle through the available options and the lower left button (below the volume buttons) to select. Wait for up to 90 seconds for the reset to complete.

Confirm there’s no network issue. If “Not Registered On Network” error happens all of a sudden, it’s possible that it may be the result of a service disruption. If you have other phones on the same network, try to see if they also show a similar error. If multiple phones are unable to connect to your network, what you can do is to simply wait for the problem to be fixed. In some cases, a carrier may intentionally disable their cellular services to comply with security requests from the government. In other cases, an unexpected outage may be to blame. As an end user, there’s nothing much that you can do about that.

Reset network settings. “Not registered on network” error can also be a direct result of outdated or incorrect network configuration. To ensure that your S9 has the correct or default network setup, you can try to reset its network settings.

  1. Open Settings app.
  2. Tap General management.
  3. Tap Reset.
  4. Tap Reset Network settings.
  5. Tap RESET SETTINGS button to confirm.
  6. Restart your S8 and check for the problem.

Confirm SIM card is working. A defective SIM card may result to “Not Registered On Network” error. Try to insert your SIM card to another compatible device and see if “Not Registered On Network” error shows up. Or, you can try to reseat the SIM card on your phone and see what happens:

  1. Turn off your phone.
  2. Remove the SIM card carefully.
  3. Wait for at least 10 seconds before turning the phone back on.
  4. Then, re-insert the SIM card and check for the problem.

You can also try another SIM card. If reseating the SIM card won’t change anything, consider getting a new one. It’s possible that the current SIM card may no longer be working properly, especially if it’s a carry-over from an old device.

Check for bad app. In case there’s a problem with a third party app, you can restart the phone to Safe Mode. In Safe Mode, no third party apps will be allowed to run. So, if there’s no “Not Registered On Network” error while your Note9 is on safe mode, that’s a sign that a bad app must be the cause. Here’s how to restart your phone to Safe Mode:

  1. Turn the device off.
  2. Press and hold the Power key past the model name screen.
  3. When “SAMSUNG” appears on the screen, release the Power key.
  4. Immediately after releasing the Power key, press and hold the Volume down key.
  5. Continue to hold the Volume down key until the device finishes restarting.
  6. Safe mode will display in the bottom left corner of the screen.
  7. Release the Volume down key when you see Safe Mode.

To identify which of your apps is causing the trouble, you should boot the phone back to safe mode and follow these steps:

  1. Boot to safe mode.
  2. Check for the problem.
  3. Once you’ve confirmed that a third party app is to blame, you can start uninstalling apps individually. We suggest that you begin with the most recent ones you added.
  4. After you uninstall an app, restart the phone to normal mode and check for the problem.
  5. If your Note9 is still problematic, repeat steps 1-4.

Reset app preferences. In some cases, apps may encounter problems if one or a number of default or core system apps and services are disabled. To ensure that all your apps have access to defaults apps, do the steps below:

  1. Open Settings app.
  2. Tap Apps.
  3. Tap on More settings at the upper right (three-dot icon).
  4. Select Reset app preferences.
  5. Restart your S9 and check for the problem.

Wipe the phone. Should nothing change at this time, consider wiping the phone to return all software settings to their defaults. Make sure to back your personal data up ahead of time. Follow the steps below to factory reset your phone:

  1. Create a backup of your data.
  2. Turn off the device.
  3. Press and hold the Volume Up key and the Bixby key, then press and hold the Power key.
  4. When the green Android logo displays, release all keys (‘Installing system update’ will show for about 30 – 60 seconds before showing the Android system recovery menu options).
  5. Press the Volume down key several times to highlight ‘wipe data / factory reset’.
  6. Press Power button to select.
  7. Press the Volume down key until ‘Yes — delete all user data’ is highlighted.
  8. Press Power button to select and start the master reset.
  9. When the master reset is complete, ‘Reboot system now’ is highlighted.
  10. Press the Power key to restart the device.

Contact network operator. If all the troubleshooting above won’t fix the bug on your device, consider letting your network operator know about it. There might be another explanation for the problem other than a fault in your device.


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