The SD card can not be recognized or unloaded frequently

Solutions:
1. Confirm that the SD card is under FAT 32 format.
2. After turn off the phone, unplug the SD card and turn on again.
3. Enter the hardware detection (dial interface input *#*#64663#*#*) to check whether the SD card is normal and see whether it can be installed and uninstalled normally.
4. Put the SD card in the card reader and connect to the computer to read it.
5. Try replacing an SD card.
Notes:
If SD is working on other device but can not be recognized by Xiaomi device, it is suggested to be inspected by after-sales technician (service center or send to repair) . It may be a issue with the SD card slot.