How to Fix Samsung Galaxy Split Screen Apps Closing Unexpectedly

Samsung Galaxy split screen apps usually close unexpectedly because of aggressive battery limits, outdated One UI components, app incompatibility, low memory, or corrupted app data. Fixing the problem normally involves updating One UI and the apps, removing battery restrictions, clearing cache for the affected apps, and testing Multi Window with supported app pairs.

Steps

Update One UI and all affected apps.

Open Settings > Software update and install pending updates. Then update the apps from Galaxy Store and Play Store, since a Samsung split screen crash often comes from app-side bugs.
Remove battery restrictions for the closing apps.

Open Settings > Battery > Background usage limits and check if either app is sleeping or deep sleeping. Set both apps to Unrestricted battery use if available.
Clear cache for the affected apps and One UI Home.

Go to Settings > Apps, select each app, then clear cache. If Galaxy Multi Window close problems started after an update, also clear cache for One UI Home.
Restart the phone and test different app pairs.

Some apps do not fully support Multi Window. Test split screen with common supported apps such as Samsung Internet, Messages, Gallery, or Chrome to confirm whether the issue is app-specific.
Reset app preferences if the issue affects many apps.

In Settings > Apps, open the menu and choose Reset app preferences. This can fix broken permissions, disabled background services, or default app conflicts linked to fix split screen One UI troubleshooting.

Common Issues and Fixes

Issue	Likely Cause	Fix
One app closes only in split screen	The app does not fully support Multi Window	Test another app pair and check whether the same app fails every time.
Both apps close after a few seconds	RAM pressure or battery management	Close recent apps, disable power saving, and remove battery restrictions.
Problem started after a One UI update	Cached system conflicts	Clear app cache, restart the device, and install any follow-up patch.
Split screen works, then collapses when switching apps	Launcher or gesture conflict	Update One UI Home and test with navigation buttons instead of gestures.
Only games or video apps close	DRM, fullscreen lock, or unsupported layout	Avoid split screen for restricted media and gaming apps.

Quick Tips

Device differences: Foldables, tablets, and older Galaxy models may show different Multi Window behavior under the same One UI version.
High memory usage: RAM-heavy apps such as camera, games, and video editors often trigger background app removal faster.
Customization conflicts: Good Lock modules or third-party launchers can interfere with Multi Window stability on some models.
Safe Mode testing: If Safe Mode stops the crash, a third-party app or customization tool is the likely cause.

🤔Note:

Samsung split screen stability can vary by One UI version, device model, launcher setup, and the specific app pair you use. If the issue appears only with one app, that app is often the real cause rather than Multi Window itself.

Why does Samsung split screen stop working after an update?

A One UI update can leave old app cache or launcher data behind. Updating all apps and clearing cache usually restores normal Multi Window behavior.

Can unsupported apps force Galaxy Multi Window close?

Yes. Some apps open in split screen but are not stable in long sessions. Repeated closing with one specific app usually indicates limited Multi Window support.

💡Protip:

If repeated crashes lead to a reset or deeper system repair, a device backup made with a phone management tool such as Dr.Fone can help preserve photos, messages, and app files first.

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