To use the split-screen feature on a Samsung Galaxy S10, follow these steps:
Open the two apps you want to use in split-screen mode. Make sure they are both running in the background.
Tap the Recent Apps button (usually a square or three vertical lines) located in the navigation bar at the bottom of the screen. This will bring up the list of recently used apps.
Locate the first app you want to use in split-screen mode. Tap and hold the app icon located above the app's preview window. A menu will appear.
Select "Open in split-screen view" from the menu. The selected app will now be displayed on the top half of the screen.
Scroll through the list of recent apps or use the search function to find the second app you want to use in split-screen mode. Tap on the second app to open it in the bottom half of the screen.
You can now interact with both apps simultaneously. To adjust the size of each app, drag the dividing line between the two apps up or down.
To exit split-screen mode, drag the dividing line to the top or bottom edge of the screen, depending on which app you want to close.
Note: Not all apps support split-screen mode. If an app doesn't support this feature, you won't see the "Open in split-screen view" option in the menu.
To split the screen on a Samsung Galaxy S10,
follow these steps:
You can adjust the size of each app window by dragging the bar in the middle of the screen left or right. To exit split-screen mode, drag the bar all the way to the top or bottom of the screen, or simply swipe up from the bottom of the screen to access the Recent apps list and tap the app you want to exit from split-screen mode.