If your Samsung Galaxy Note 10+ isn't able to detect your microSD external card, then you should check the instructions in this post and learn how to troubleshoot the issue.

The Samsung Galaxy Note 10 Plus supports adding an extra microSD card, while the smaller standard Note 10 model doesn't support adding extra storage.

How to Fix Galaxy Note 10 Plus Not Detecting SD card:

Before attempting to fix any issues you are experiencing with your Galaxy Note 10 Plus SD card you should make sure that the external SD card is working properly. If you are sure that your SD card is functional but your Galaxy Note 10 Plus doesn't detect it, then you can apply the changes below.

Power off the device and Re-seat the SD card:

Switch off the device first, then remove the SD card tray and re-seat the microSD storage. Reboot the phone in normal mode and test the microSD card functionality. If the problem is gone and everything works as intended, then you can close this post and you are done. If the issue continues to manifest, then you can try the extra steps in the other methods below.

Reformat Galaxy Note 10 Plus microSD Card:

Sometimes the microSD cards might not be detected by smartphones due to them not being formatted the correct way, so you should attempt to do it using the phone. Here's how to do it:

  • go to Settings.
  • find and open the Device Care menu.
  • tap the Storage icon.
  • now tap on the 3-dot icon and select "Storage settings" option.
  • tap the "SD card" option.
  • now you simply need to tap "format" and confirm process.
  • when the format is done you can reboot the device and verify the microSD functionality.

If the issue continues after the format, then you have to try and apply the extra changes below.

Reset App Preferences for the Galaxy Note 10 Plus:

The issue might be related to some app that has changed some settings by itself, and you can fix it by resetting the app preferences for the entire device. By resetting the app preferences you won't delete any files from your device and you will simply revert all the changes any app has done to your Note 10 Plus device. Here's how to do it:

  • go to Settings.
  • tap the Apps menu to open it.
  • now tap the 3-dot icon and select "reset app preferences".
  • confirm the process and you are done with this guide.

Clear Galaxy Note 10 Plus Cache Partition:

The Cache Partition can be easily cleared using the Recovery Mode of your device. By clearing the cache partition you will delete all the data your Galaxy Note 10 Plus device has stored for each application you have installed since you first bought the device. Here's how to clear the cache partition for your device:

  • power off the device.
  • boot it in Recovery Mode.
  • wait 30 seconds for the Recovery Mode options to load.
  • use the Volume buttons to select options and Power button to confirm any action.
  • select 'wipe cache partition' and confirm process.
  • reboot phone in normal mode when you are done with the cache partition.

Install Latest Android Firmware Update:

The microSD external storage not being detected by your Galaxy Note 10 Plus might be due to a faulty firmware, then you should look for new updates and install them if there are any available. Go to Settings> Software Update> Download and Install> and look for new firmware updates. If a new update is ready for installation you need to confirm the download, and then let the Galaxy Note 10 Plus complete the installation.

Reset All Settings for Galaxy Note 10 Plus:

This method acts will act as a factory reset only without removing any of the installed apps or data files. All the changes and options you have configured on your Note 10 Plus will be restored to their original settings, but all your personal data will stay the same. By using this method you will be able to refresh the device and force it to reconfigure all of its settings from scratch. This might fix the issue with your Galaxy Note 10 Plus has with the microSD card. Here's how to reset all Settings:

  • go to Settings.
  • open General Management.
  • tap Reset.
  • now tap the "Reset settings" option.
  • confirm the process by tapping the blue "Reset settings" button from the new menu.
  • confirm process and you are done.

Reboot your phone and you should be able to use your microSD card from now on.

If you need more help with this guide then you should tell us in comments below. Also, if the microSD isn't working after applying all of the above you should try to purchase a different one, as the current one you're using might be faulty.

NOTE: you can also choose to factory reset the Galaxy Note 10 Plus. Check the guide here in order to learn how to factory reset your device.

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