Samsung SM-T395 User Manual page 96

Apps and features
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On the lower window, swipe left or right to select another app to launch.
To launch apps not on the list of recently used apps, press the Home key or the Back key
and select an app.
Adjusting the window size
Drag the bar between the app windows up or down to adjust the size of the windows.
When you drag the bar between the app windows to the top or bottom edge of the screen,
the window will be maximised.
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