The steps are as follows:1, open the desktop of the phone, find the settings.

2, search for Split Screen in the search bar at the top, a Smart Multi-Window will come out, tap it in. In the multitasking interface, long press the need to split-screen application, select the application next to the pop-up multiple options, select that icon for the two square signs can enter the split-screen mode.

3. If you want to exit the split-screen mode, you must tap the exit split-screen displayed on the app to end the split-screen mode.