Fix: Samsung S23 and S23 Plus Sim Card Not Working or Detected

Samsung is one of the world’s most popular and widely used smartphone brands. There are a variety of high-end and budget-friendly Samsung models available, so...

Subrato Chatterjee

Last updated on January 2, 2026

Subrato Chatterjee

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Subrato Chatterjee is an Engineer who has always searched for something new. He found peace in technology, smartphones, and gaming. What do you need more? He is an expert in every sphere of life.

Possible Causes of Samsung S23 and S23 Plus Sim Cards Not Working or Detected

In order to find fixes to the problem, we need to identify its root cause. It is possible that your Samsung S23 or S23 Plus is not detecting or working with a sim card for several reasons, including:

Sim Card Not Properly Inserted: When your Samsung S23 or S23 Plus does not detect a SIM card, the sim card may not be properly inserted. Sim cards must be properly inserted in the designated slots. It may appear that the SIM card is in place, but it may not be fully inserted.

Damaged Sim Card: A damaged or defective sim card may also prevent your Samsung S23 or S23 Plus from detecting it. Sim cards can become damaged, scratched, or worn over time. This could cause this problem.

Software Issues: Sometimes, the problem may be due to software issues on your Samsung device. There may have been an incorrect software update or outdated software that has affected the sim card’s functionality.

Network Issues: Another reason why your Samsung S23 or S23 Plus may not be detecting a sim card could be related to network issues. This could be caused by poor network coverage or issues with your service provider.

Hardware Issues: The issue on your Samsung S23 or S23 Plus may be related to the hardware. A faulty sim card slot or other internal hardware problems could cause this.

Solution 1: Check the Sim Card Tray

It has been mentioned earlier that incorrectly inserting a SIM card is one of the most common causes of a sim card not working or not detecting issues. If this issue persists, check the sim card tray to make sure the sim card is inserted correctly. Here are the guidelines you need to follow:

Make sure your Samsung S23 or S23 Plus is turned off.
Thereafter, you will need to locate the sim card tray on your device.
Remove the sim card tray from your device using the sim ejector tool or a paper clip.
Ensure that the sim card is in good condition.
Then, put the sim card back into the tray.
Start your Samsung S23 or S23 Plus by putting the SIM card tray back in.
You should now be able to detect your sim card on your device.

Solution 2: Clean the Sim Card

Dust, dirt, or debris on the sim card contacts could prevent your Samsung S23 or S23 Plus from detecting a SIM card. The sim card contacts can be cleaned to resolve this issue. Here are the guideliness you need to follow:

Your Samsung S23 or S23 Plus should be turned off.
Your device should have a SIM card tray.
After that, to remove the sim card tray from your phone, use the sim ejector tool or a paper clip.
From the tray, remove the SIM card.
After that, use a soft cloth or tissue paper to clean the contacts on the SIM card. Don’t use water or other liquids while cleaning.
You need to re-insert the SIM card into the tray correctly.
Turn on your Samsung S23 or S23 Plus after you put the SIM card tray back into it.
You should now be able to detect your SIM card on your device.

Solution 3: Restart your Device

You can also restart your Samsung S23 or S23 Plus to fix the sim card not detected or not working issue. It is sometimes necessary to restart your device to resolve software-related issues affecting your SIM card’s performance. To restart your device, follow these steps:

Press and hold the power button on your Samsung S23 or S23 Plus.
On the screen, select restart.
Restart your device after it has been restarted.
You should now be able to detect your SIM card on your device.

Solution 4: Update your Device Software

An outdated Samsung S23 or S23 Plus software could prevent your device from detecting a SIM card. To fix this issue, you must update your device’s software. The steps are as follows:

On your Samsung S23 or S23 Plus, go to the settings menu.
After that, tap “Software update” at the bottom of the page.
To check for updates, click “Download and install.”.
After that, you can install an update by tapping the “Install” button.
Once the software update is complete, wait for your device to reboot.
You should now be able to detect your sim card on your device.

Solution 5: Reset your Network Settings

There are times when network-related issues can cause the Samsung S23 or S23 Plus not to detect the SIM card. You can fix this issue by resetting your network settings. Here are the steps you need to follow:

On your Samsung S23 or S23 Plus, go to the settings menu.
Select “General management” from the menu.
Select “Reset.”
Select “Reset network settings.”
Thereafter, you will need to enter your passcode to confirm the reset.
You will need to wait until the reset process is complete on your device.
Ensure that your device now detects the SIM card.

Solution 6: Contact your Service Provider

If none of the above solutions work, the problem may be related to your service provider. Your Samsung S23 or S23 Plus may have a problem with the sim card or service, causing the sim card to not work or be detected. If this occurs, you should contact your service provider for assistance.

Wrap Up

In conclusion, the sim card is not working, or the detected issue on your Samsung S23 or S23 Plus can be frustrating. However, with the solutions provided in this article, you can fix the issue quickly and easily. It is essential to identify the issue’s root cause before trying any solutions. In no time at all, you can have your Samsung device up and running again with simple and straightforward solutions or more complex ones with patience and persistence.