1. Check the SD card to ensure it’s been correctly formatted:
- Reformat the card
2. Check the SD card to ensure it has adequate storage space:
- Add more storage to the SD card
- Delete unnecessary files from the card
3. Check the SD card is working correctly in another device:
- Replace the card if necessary
4. Check the phone to ensure the SD card has been correctly inserted:
- Re-insert the SD card
