How does Xiaomi mobile phone check when and how long the application has been used?

Take Xiaomi 5 mobile phone as an example

operation sequence/order

1. First, find the application "Dial" icon on the mobile phone desktop, and click to enter the new panel.

2. Next, on the dial panel, enter? *#*#4636#*#*? .

3. After input, enter the "Test" page, find the "Usage Statistics" option in the page, and click.

When entering a new page, you can check when and how long the application has been used.