Resolving No SIM Card Detected or Not Recognized Error on Samsung S20, S20 Plus, and S20 Ultra

Samsung’s Galaxy S20 series, consisting of the S20, S20 Plus, and S20 Ultra, has been widely acclaimed for its remarkable features and performance. However, users may occasionally encounter issues such as the “No SIM Card Detected” or “Not Recognized” error, which can impede the phone’s functionality and disrupt connectivity. This problem can arise due to various reasons, such as a faulty SIM card, software glitches, or hardware issues. In this guide, we will explore different solutions to help you resolve the “No SIM Card Detected” or “Not Recognized” error on your Samsung S20, S20 Plus, or S20 Ultra.

The “No SIM Card Detected” or “Not Recognized” error can be particularly frustrating for users, as it prevents them from making calls, sending messages, or using mobile data. Identifying the root cause of the problem is essential in order to apply the most effective solution. By following the troubleshooting steps provided in this guide, you will be able to identify and resolve the issue, ensuring a seamless user experience with your Samsung S20 series device.

Fix: No Sim Card Detected or Not Recognized error on Galaxy S20, S20+ or S20 Ultra

It is crucial to understand that resolving the “No SIM Card Detected” or “Not Recognized” error may require a combination of solutions, as the underlying cause may not always be immediately apparent. By systematically addressing potential issues related to the SIM card, software, and hardware, you can effectively eliminate the error and restore your device’s functionality. In this guide, we will outline various solutions to help you overcome the “No SIM Card Detected” or “Not Recognized” error on your Samsung S20, S20 Plus, or S20 Ultra.

Check the Error

Error codes or messages are usually key to solving problems. If your messaging app displays an error every time it fails to send texts, be sure to take note of it. Then, do a Google search about the exact message or code and see if there’s any available online solution.

Simple Reboot or Forced reboot

Well, I think you already know how to restart your phone. So just restart the device and see whether it solves the issue or not. Restarting a device is always the ultimate solution for any issue. Not only Pixel but this applies to each and every electronic device. I used to tell my mom to restart her device if she faces any issue with her smartphone.

Well if you still need to know how to restart then, here is it: Press your phone’s power button. On the screen, tap Restart.

The other way of the reboot is as follows:

Press and hold the Volume Down button.
While holding it down, press and hold the Power key.
Keep the button held for 10 seconds, it will be restarted automatically.

If this doesn’t work then head to the next method.

Rebooting your device regularly at least once every week can be beneficial. If you tend to forget things, we suggest that you configure your phone to reboot on its own. You can schedule it to do this task by doing these steps:

Open the Settings app.
Tap Device Care.
Tap the 3-dot at the top.
Select Auto restart.

Remove and Reinsert SIM card

I don’t think you need another tutorial to reinstall a sim card in your device. Just remove the sim tray from the device and restart the device and then reinsert it to the device.

Activate the flight mode.
Push Sim eject tool into the circular opening on the SIM card tray to remove it.
Power off the device.
Remove the Sim card from the Sim tray then place it back in.
Push the tray back into the slot.
Boot the device.

Once you’ve removed the SIM card from the device, wait for a few moments before re-inserting it. This has the effect of refreshing the system without the old cellular settings. Once the SIM card is re-inserted and the phone restarted, your network’s configuration should be added automatically.

If you have another phone that can work with your network, you can also try to insert the SIM card to it. This will help you check if there’s an issue with the SIM card itself. If the problem returns when you use the SIM card in the second device, you either have an issue with the SIM or with the network. Try getting a new SIM card to see if it’s the SIM or the network.

Use another SIM

If nothing changes after reseating the SIM, your next move is to see if the issue is caused by a defective SIM card. There are two ways to do this. One is by getting a new SIM card from your carrier. The other way is to borrow a known working SIM card from someone and see if your S20 detects the card.

Reset Network Settings

Open Settings from either Quick Nav menu or the launcher.
Scroll down and tap on General management.
Then tap on Reset.
Finally, tap on Reset network settings.
Then tap on Reset settings.
Confirm with your lock screen password when prompted.

Clear Cache from Recovery Mode

In case you don’t know what is recovery, the first thing the bootloader rings up is the recovery. Recovery Mode refers to a special bootable partition containing a recovery application installed in it. And you can fix some problems with your phone. Follow the steps to clear the cache from recovery mode:

Turn off your phone.
Once it is turned off. Press and hold the power/Bixby and volume down button simultaneously until the Android logo pops up.
When the green Android logo displays, release both buttons.
The Recovery screen menu will now appear
Use the Volume button to go to Wipe Cache Partition, then press the Power button to confirm the selection.
Wait until your device wipes out all cache or temporary data from the system partition.
Press the Power button again to reboot the device.

This clears all the temporary data from the device. And then it works like new.

Troubleshoot apps in Safe Mode

In case you don’t know what is safe mode, in safe mode, the system temporarily disable all third-party applications you installed on your device. By doing this we can figure out which app is occurring the problem. Follow the below step to turn Safe Mode on:

Turn OFF the device.
Press and hold your device’s Power button till the model name screen.
When the SAMSUNG logo appears on the screen, release the Power key.
Immediately after releasing the Power key, press and hold the Volume down key.
Continue to hold the Volume down key until the device finishes restarting.
Safe mode will display in the bottom left corner of the screen.
Release the Volume down key when you see Safe Mode.

After figuring out the apps which are creating the problem, follow the below steps to uninstall it(if required):

Open Settings from Launcher.
Tap on Apps.
Tap See All Apps.
Tap an app that you want to uninstall
Tap Uninstall.
Tap OK to confirm.

Factory Reset

Disclaimer

Factory reset will delete everything, so you want to make sure that you create a copy of your personal data such as photos, videos, documents, texts, etc. ahead of time.

Open the Settings from the launcher.
Scroll to and tap General management.
Tap Reset.
Select Factory data reset.
Tap Reset to continue.
Tap Delete All to confirm the action.

From Recovery:

Turn off your phone.
Once it is turned off. Press and hold the power/Bixby and volume down button simultaneously until the Android logo pops up.
When the green Android logo displays, release both buttons.
The Recovery screen menu will now appear
Use the Volume Down button until you are highlighting ‘Wipe data/factory reset.’
Press the Power button to select ‘Wipe data/factory reset.’
Use Volume Down to highlight Yes.
Press the Power button to confirm the action to clear your phone data.

Visit the Service Centre

Although it’s rare, some cases of overheating issues on Samsung Galaxy devices may have bad hardware as the origin. If a factory reset won’t help in fixing your issue, visit your local Samsung store or Service Center so a qualified Samsung technician can examine the hardware. If needed, they may send it in for repair or replacement.

Do you own a Galaxy Device, or any Android device and need these types of simple tutorials? Then stay tunned to GetDroidTips’ Android Tips & Tricks column because many simple tutorials for Galaxy are coming soon.

If you have any queries regarding this, the comment section always available for you.