One UI 4.1.1 Update
Multitasking
Switch between apps quickly
A taskbar now appears at the bottom of the screen for quicker navigation between apps.
Quickly open apps in split screen or a pop-up window
Drag apps from the taskbar or Recents screen to open them however is most convenient for you. Drag to the top, bottom, left, or right edge of the screen to open in split screen. Drag to the center of the screen to open in a pop-up.
Open app pairs quickly
Pair apps that you often use together, then add them to the Home screen or taskbar so you can open them in split screen with just a single tap.
Easily switch from pop-up view to split screen
When you're using an app in pop-up view, just tap the split screen button inside the window handle. You'll be able to choose a second app to open alongside of it.
Change your view with a gesture
Switch from full screen to split screen view by...