Fix: Samsung Galaxy Note 20 / 20 Ultra No SIM Card Detected Error

Having high-end phones like Samsung Galaxy Note 20 or Note 20 Ultra does not guarantee that the devices will not fall victim to any issues. The devices have faced issues in the past, and one of the most common problems is the No Sim Card Detected error. Whether the device is not detecting a sim card or throwing errors like No Service or No signal detected, we’ve listed some fixes to eliminate those issues.

In most cases, the sim card-related errors like No Sim Card Detected, No Service, etc., can be easily fixed. But, sometimes, the problem occurs when the sim card is damaged or there’s some network issue in your area. In any case, it’s worth applying the fixes that we have listed below.

Samsung Galaxy Note 20 Ultra No Sim Card Detected issue

Here’s what to do if your Samsung Galaxy Note 20/Note 20 Ultra is not detecting SIM card

Fix 1: Turn Airplane Mode on and off

Whenever you face any sim card or network-related issues, you should first turn on the Airplane Mode and then turn it off. This method does the trick most of the time. This method disconnects your device from the wireless system until the option is not turned on.

To turn on the Airplane Mode, Navigate to Settings > Connections > Airplane Mode and then tap on the toggle next to the Airplane Mode. Alternatively, you can turn on the feature from the Quick Settings.

Fix 2: Perform a soft reset

Soft reset (also called Force restart) is more effective than performing a normal reboot. The No Sim Card Detection Error on your Samsung Galaxy Note 20 or Note 20 Ultra could result from a system glitch. Performing a soft reset ends all the running processes, including those responsible for system glitches, which can fix all the sim card or network problems.

To perform a soft reset on your Samsung Galaxy phone, press and hold the power button and volume down (-) button for a few seconds. Release your fingers from the buttons once the Samsung logo appears on the screen. Let the device reboot itself, and check if the sim card issue persists.

Fix 3: Remove and re-insert the sim card

Your phone can throw errors such as No Sim Card Detected when the sim card is damaged or misplaced in the sim tray. To rule out this possibility, open the sim tray and check if the sim card is placed as it should be. Also, check for any damage on the card. If you found any damage on the sim card, replace it by going to the respective carrier’s store. Otherwise, move on to the following method.

Fix 4: Reset network settings

Some changes in the network settings might have caused the device not to be able to detect a sim card. Thankfully, Samsung offers an easy way to reset all the changes. By resettings network settings, you will lose access to Wi-Fi passwords, paired devices, etc.

To reset network settings on your Samsung Galaxy Note 20 or Note 20 Ultra, go to Settings > General management > Reset > Reset network settings > Tap on Reset settings.

Fix 5: Factory reset

If none of the methods has worked for you, we are left with the factory reset option. This method works most of the time with software-related issues, including the No Sim Card Detected issue on your Samsung Galaxy Note 20 or Note 20 Ultra.

By performing a factory reset on your phone, you will lose access to all your data. Therefore, take a complete backup of your phone before using this method. To factory reset your Samsung Galaxy Note 20 or Note 20 Ultra, navigate to Settings > General Management > Reset > Factory Data Reset. After that, the device will take a couple of minutes to complete the process. Ensure that the device has at least 50% battery, as the process can sometimes take longer than usual.

We believe that one of the methods would have helped you fix the issue on your Samsung Galaxy Note 20 or Note 20 Ultra. Let us know which method did the trick for you in the comments below.


  1. Help plz
    I lost my 34 yr old son we think 1/22/22 was found 2/5/22 said he sat on his couch with his phone always in his hand and fell asleep and his heart stopped. 2 toxicology test where clean! Thing where taken from his wallet?
    T-mobile said they would unlock it with his death certificate provided 4 months later I got it they said oh no we can’t unlock phones??
    It holds all the answers to his death
    Plz help me unlock his Samsung Galaxy tablet 20

  2. Please help I have the same issues with the sim card that no service no detect the sim card as I already try many way to reset, restart, factory reset, network reset, sim card slot clean and reinsert and at the end still no solved the problem.

  3. I have a note 20 and recently just had the screen repaired and foelr some reason now its showing no sim i had it hooked up for about a month before the damage. I’ve tried all the above fixes and also contacted my carrier and it is still showing no sim. Any other suggestions?

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