If you want to enable split screen, take the Huawei Mate 40 mobile phone as an example:
1. Enable split screen:
1. After opening an application, On the left or right side of the phone screen, slide the screen from outside inward and pause to bring up the smart multi-window application bar.
2. Long press and drag the application icon in the application bar to the screen to enable split screen.
2. Split-screen swap:
Long press the horizontal bar at the top of the split-screen window until the split-screen window shrinks, and then drag the window to another split-screen window.
3. Exit split screen:
Press and hold the horizontal or vertical bar on the middle line of the split screen and drag until the other window disappears.
Tips:
Some applications do not support split-screen display.
Only two split-screen applications can be used at the same time.