This paper introduces the reasons why the mobile phone memory card can't be read and the solutions.

If you use a vivo phone, the SD card is damaged or unavailable. Please refer to the following troubleshooting methods:

1. The phone is turned on. If the memory card is not taken out correctly, the data in the card may be damaged and the damaged data cannot be retrieved. The correct way to get the card: turn it off and take out the memory card, or go to Settings-Storage and Storage Space-Uninstall the SD card, and then take out the memory card.

2. Turn off the phone and take out the memory card, observe whether there are stains on the metal surface, clean it up and reinstall the memory card to see if the data is restored.

3. Use the card reader to install the memory card to connect to the computer, or install the memory card to other devices to check whether the data is normal. If you can't open the data file, it may be data corruption or memory card damage. It is suggested that you back up the data in the card before formatting the SD card or replacing it with a new memory card.

Method of formatting SD card: Enter Settings-Storage and Storage Space-Format SD card, which will erase the data in the card.

4. If the capacity of the memory card is full, the stored new file may be abnormal. It is recommended that you migrate data regularly and free up space.

5. If the above methods fail to solve the problem, please back up the mobile phone data in advance and take the mobile phone and purchase certificate to vivo customer service center for testing. Address of customer service center: Go to official website /vivo Mall APP-My-Service outlets or the web version of vivo official website-Slide the bottom-Service Support-Service outlets query-select provinces and cities to query the address of customer service center. It is recommended to call in advance before going to avoid empty running, plan your trip reasonably and travel safely.