The method is as follows:

1. Take a screenshot

If you are using the mobile phone page and want to save it, just press and hold the power button and the volume button at the same time to take a screenshot. . Pictures are automatically saved in the gallery;

2. Open the music player when the screen is locked

When the phone is locked, just double-click the home button to start the music player. You can also listen to music without unlocking the screen. At this time, click the main key again to view the day of the week and date;

3. Return to the previous level

Swipe from the main key to the screen to return to the previous level;

4. Call up background tasks

Swipe from both sides of the home button into the screen to bring up multitasking, and drag the task icon upward to close the task