Tool: a Xiaomi mobile phone (take Xiaomi 5 mobile phone as an example)
1. Find "File Management" on the phone desktop and click Open.
2. Find the "Clean" icon at the bottom of the file management interface and click it.
3. Find "Clean the selected garbage" at the bottom of the garbage cleaning interface, and click to clean it.
4. After cleaning, find the "big file" sign and click enter.
5. Select the file you want to delete, click "Delete Selected File" at the bottom of the screen, and other files in the mobile phone can be deleted.