Samsung Galaxy S21 not registered on Network

Samsung Galaxy S21 is the latest smartphone in the Galaxy S series. The S21 stands as one of the most delicate and bewildering Android phones of 2021. Samsung is known for its impressive and durable hardware. At times, even the latest phones come up with errors or bug. One of the most common issue is Galaxy S21 not registered on network. Today we will talk about how to solve this issue.

Troubleshooting Galaxy S21 not Registered on Network:

This is a common problem on Samsung Galaxy smartphones, if you ever had a Galaxy phone before. You might have come across this error. We will talk about all its potential solutions. We will move from easy solutions to complicated ones, just try each of them in order. Hopefully, any one of them will trigger the solution.

  • First, it is pretty common to come across this issue when you move from a no network area to a network area. Afterwards, if you try to send a message or make a call. The S21 shows on the screen “Not registered on network”. The easy and self-implemented method to solve is to Enable and then Disable Aeroplane Mode.
  • The second fix to this issue is to reset the Network Settings of your phone. Sometimes, the DNS and network settings are messing up with the connection of your phone. If you reset network settings, all your saved WiFi passwords will be deleted. Alongside, if you have installed network certificates to access certain network, for example, eduRoam. Its settings and certificate will be also deleted. Afterwards, you will have to set it up again.
  • Settings -> Reset -> Reset Network Settings.

Clear Cache of Galaxy S21:

The next potential solution is to clear the cache partition of Galaxy S21.

In order to clear the cache, you need to turn off your phone and boot into the recovery menu.

  1. On your Galaxy S21, turn it off first.
  2. Now connect your phone to PC via Type-C Data Cable.
  3. Press and hold Volume Down and Power Button simultaneously.
  4. Once the screen goes dark. Release the Volume down button. Now, while holding the power button, press the Volume up button.
  5. As the Samsung logo appears. Release the buttons. Now you will be in the recovery menu.
  6. Here, use the volume buttons to navigate to Wipe Cache Partition and press the power button to make a selection.
  7. Once the cache is cleared, you will see a log entry at the bottom of the screen.
  8. Now select the “Reboot System Now” option.

Hopefully, the issue will be solved.

Safe Mode on Samsung Galaxy S21 or S21 Ultra:

In Safe mode, certain parts and apps of your phone are disabled in order to troubleshoot the issue.

  1. Check in the Safe mode, if the error is solved. If it is solved. It means an app on your phone is causing the issue. Now you have to trace it and uninstall it.
  2. If the error started appearing after installing a certain app. Uninstall it.
  3. In order to exit safe mode, just use the power button to restart your phone.

Galaxy S21 not registered on the network error after a new update or flashing new firmware?

If the error message started appearing after you flashed a new firmware. Chances are you have flashed an incompatible firmware. For example, if your phone is carrier locked to T-Mobile and you have flashed O2 firmware on it. You will have not registered on network error. In order to solve it, you will have to install the appropriate stock firmware on your Galaxy S21. You can use this guide to flash the firmware.

Sometimes, after an OTA update, if you come across this error, chances are it will be solved after a reset. If none of the above-mentioned solutions worked for you. Factory reset your phone. Or just reset the settings of your phone while keeping the data. You can make a backup of your phone on your PC via smartswitch before performing a factory reset.

These are all the potential solutions for not registered on network error on Galaxy S21. I hope this issue is solved. If you have any queries or questions feel free to drop them in the comments below.

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