Phone can't recognize the SD card

Solution:
1. Replace it with another SD card or put SD card in another mobile phone and see if it can be identified to eliminate the SD related issues.
2. Determine whether the system is the latest version. If not, update to the latest version.
3. If anything has been done before, such as updating the system, downloading applications, mobile phone root, downloading third-party security software and so on.
4. If any of the above operations has been done, it may be caused by the local system abnormal and it is recommended to restore factory settings and try again. If the problem persists, it is recommended to go to after-sale center for more information.
Supplementary note
It is suggested to buy SD card from authentic manufacturer to ensure data security.