| Shrink an App Window or Split the Screen |
In full-screen mode, you can shrink the app screen to turn it into a small floating window, or create a split screen with another app as well, at any time.
This feature is unavailable in some apps.
Shrinking the app window
When an app is displayed in full screen, swipe up from the bottom to 
in the top right corner of the screen, to display the app as a small floating window. The window will automatically display in landscape mode, when you shrink a video or game app in landscape mode.
Switching between small and normal-sized floating windows
Touch the small floating window to return the window to its normal size, and display it in the location where it was last opened.
If you reduce a normal-sized floating window to the smallest possible size, and then release the window, it will automatically shrink into a small floating window that remains fixed to the upper right corner of the screen.
Double-tapping the small floating window will return the app to a full screen display.
Splitting the screen
When an app is displayed in full-screen mode, swipe up from the bottom to
in the top left corner of the screen.Then open another app to display both apps in split-screen mode.