Shrink an App Window or Split the Screen |
In full-screen mode, you can shrink the app screen to turn it into a floating window, or create a split screen with another app as well, at any time.
This feature is unavailable in some apps.
Before using this feature, go to Gestures.
, and selectShrink the app window
When an app is displayed in full-screen mode, swipe up from the bottom to in the top right corner of the screen, to display the app as a small floating window. The small floating window will automatically display in Landscape mode, when you shrink a video or game app in landscape mode.
Small floating windows in Landscape mode are only supported in certain apps.

The figures are for reference only.
You can try the following:
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To minimize a floating window, hold down on the window, and drag it to the left or right edge of the screen, or quickly drag it to the left or right.
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To close a floating window, hold down on the window, drag it to
at the bottom of the screen, or quickly drag it downwards.
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To open in full-screen mode, hold down on the window, drag it to the top of the screen, or quickly drag it upwards.
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To enlarge the small floating window, tap on it.
If you drag the bottom edge, two sides, or bottom corners of the standard-sized floating window to reduce the 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.
Split the screen
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When an app is displayed in full-screen mode, swipe up from the bottom to
or
in the top left corner of the screen.
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Then open another split-screen-capable app to display both apps in split-screen mode.