Turn off the device and remove or SD card. For that you would require an ejector tool, otherwise, any other tool could damage the device. Have you inserted the SD card properly in the SIM tray? If you don’t remember then you should remove the SD card and clean the tray along with SD card and insert it back. Alternatively, if you have SD card reader then insert it into the card reader and connect it to the laptop and verify its working condition. To make sure SD card is in working condition, insert the SD card into another smartphone and see if it is working or not. If the SD card is not detected by Samsung S10, then the probable reason can be your SD card is corrupted. You can navigate through options using Volume Up and Down buttons.
With force restart, all the cache memory will get cleared and it may fix SD Card Not Detected Error in Samsung S10 Plus and S10.
