Operation method
Open the mobile phone desktop and find the mobile phone butler.
The icon will appear and click Permission Privacy.
You can see the application encryption. Tap this column.
The system prompts you to set a password and draw a pattern.
In the following figure, select the application you want to set.
Right stroke, you can see that the color is green, indicating success.
Find the set application on the desktop, and you can see that you need a password to log in.