How to set the dual screen of mobile phone?

Dual screen of mobile phone is also called split screen function of mobile phone, which is only supported by mobile phones above Android 7.0, but not below 7.0 for the time being.

Mobile phone split screen steps:

1) Open an application, such as Settings, as shown in the figure;

2) Click the multi-task key to enter the background multi-task management, as shown;

3) Press and hold the application that needs split screen until three menu options appear, as shown in the figure;

4) Select the middle split screen function, as shown;

5) Select the application to be used in the other half of the screen, as shown;

6) After the selection is completed, the split screen function of the mobile phone can be completed, as shown in the figure.