Huawei NOVA Y91 User Manual page 38

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 Settings > System & updates > System navigation, and
select Gestures.
Shrink the app window
When an app is displayed in full-screen mode, swipe up from the bottom to
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.
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