How to fix “Not registered on the network” error on Samsung Galaxy

"Not registered on the network" error on your Samsung Galaxy? Here's what it means and how to fix it.

There may be a problem with your SIM card, or the problem may be with your carrier. Possible causes of the "Not registered on the network" error include:

  • Your phone's firmware or operating system is out of date.
  • The SIM card is disconnected or damaged.
  • Your carrier is not selected in your phone settings.
  • Your carrier is experiencing an outage.

Follow these steps in order until your phone works properly:

  1. Restart your Android phone. Restarting your device will clear any temporary conflicts that prevent you from connecting to the network.

  2. Turn off Wi-Fi. Disable Wi-Fi on your phone, wait 30 seconds, then turn it back on. This will reset your connection and may resolve temporary technical issues.

  3. Update your Android phone. Make sure your operating system and firmware are up to date. Sometimes updates contain fixes for specific issues, such as this bug.

    If your Android phone is rooted, you will need to unroot it before you can install updates.

  4. Reinsert the SIM card. Remove the SIM card and make sure it is not damaged, then put it back in its place. Make sure the card is placed correctly in the tray and the metal pins are in the correct position.

  5. Select your network manually. Make sure you select the correct carrier in your settings. Go to Settings > Connections > Mobile networks > Network operators > Search now and select your operator's network.

  6. Change network mode. If you're in an area with poor reception that doesn't support 5G or 4G, it's best to switch to 3G or 2G.

  7. Please contact your mobile operator. Go to a store or use a different phone to call your provider so they can help you resolve the issue. There may be a network outage in your area, so you just have to wait. If you have a problem with your SIM card, your carrier can help you replace it.

  8. Update APN settings. If you have recently changed service providers, you may need to update your Access Point Name (APN) settings. This is an advanced fix, so be careful and make a note of the default APN settings so you can change them back if something goes wrong.

  9. Reset network settings. Establishing a new connection to your carrier's network can resolve issues that rebooting doesn't resolve. Resetting network settings will clear all Wi-Fi passwords and Bluetooth connections, so use this step as a last resort.

  10. Use a different SIM card. If you have a spare activated SIM card, insert it and see if your phone can connect to the network. If it does, there is something wrong with your original SIM card.

    Before buying a new phone, visit the Samsung support website to find out which SIM cards are compatible with your Samsung Galaxy.

If you see a "Not registered on the network" error on your device, it means your SIM card can't connect to your mobile operator's network. You may not be able to make or receive calls or text messages.

This issue can occur on any Android phone, so the steps to fix it are the same regardless of the manufacturer or model.

FAQ
  • In addition to the reasons/solutions listed above, if you recently purchased a phone or are switching to T-Mobile from another network, you may need to unlock your device with your old carrier. Find your phone's IMEI number from Settings > About Phone on Android (or Settings > General > About on iOS), then contact T-Mobile to verify your account and help you unlock it.

  • Your provider may not have roaming agreements with other operators in the specific area you are roaming in and they may not provide service. To avoid being out of service, double-check roaming coverage before you go or look for a coverage map on your carrier's website.