Just insert it directly into the card slot. Mobile phone files are usually lost because of system errors or insufficient memory. Specific method steps can refer to:

1, insufficient memory: Tencent's mobile phone housekeeper's garbage cleaning item includes a mobile phone slimming, which can be used to clean up files on the mobile phone and junk files.

2. You can also use Tencent Mobile Manager to scan mobile phone viruses, detect mobile phone viruses, and handle mobile phone virus problems with one click.