It is recommended to remove the Micro SC card from "Settings" -> "Storage" -> "Unmount SD card".
- Make sure the SD card is not damaged.
- Dismounting the SD card inappropriately may cause an SD card detection fail.
- When SD card is mounted, go to "Settings" -> "Storage" -> "SD card" -> "Mount SD card" to engage SD card manually or simply re-in
In Home screen, enter ES File Explorer or File Manager and you should find the external storage "sd-ext" under Local or "SD card" under Home.
(Folder "sd card" represents external Micro SD card storage.) to remove