Split-screen is ideal for notes beside a browser. The gesture varies by launcher, but recent apps → app icon → Split is the usual path.
Make it usable
- Pick apps that support resize (many games do not).
- Drag the divider; on large phones use the top/bottom layout.
- Save pairs if your OEM offers app pairs.
If something fails
If Split is greyed out, the foreground app opted out—open a different secondary app first.
FAQ
Tablets?
Better; some offer freestyle windows.
Notification listener?
Unrelated—split is a system WM feature.
Updated for?
Written for current Windows 11 / recent Android; menus move—search the setting name if your build differs.
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Photo: Unsplash. Steps checked against current Windows 11 / Android settings menus; UI labels can shift slightly after OS updates.