App Lock is meant to keep your private apps secure. When it fails, sensitive apps like banking or messaging may open without protection. If App Lock is not working on your Galaxy S25 FE, there are several possible causes and solutions.
Why App Lock May Not Be Working on Galaxy S25 FE
- The feature is disabled or not properly set up.
- Battery optimization is restricting App Lock in the background.
- Outdated software or app version is causing glitches.
- Conflicting third-party apps are interfering with security features.
- Cache or settings data is corrupted.
Check If App Lock Is Enabled.
App Lock can stop working if it has been disabled by mistake. Re-enabling it ensures your chosen apps are properly locked.
- Open Settings, and then tap Security and privacy.
- Tap App Lock, and then check that the toggle is enabled for the apps you want to secure.
Remove App Lock from Battery Optimization.
Battery optimization may close App Lock in the background, preventing it from functioning. Excluding it ensures it runs without interruption.
- Open Settings, and then tap Battery.
- Tap Background usage limits, and then remove App Lock from sleeping apps.
Clear App Lock Cache and Data.
Corrupted cache files can prevent App Lock from working correctly. Resetting it refreshes the feature without removing your apps.
- Open Settings, and then tap Apps.
- Tap App Lock, and then tap Storage and clear both cache and data.
Update Software and Apps.
Outdated versions of the system or App Lock may contain bugs. Updating helps resolve security-related issues.
- Open Settings, and then tap Software update.
- Tap Download and install, and then update apps from the Galaxy Store or Play Store.
Restart Your Galaxy S25 FE.
Sometimes App Lock fails because of temporary glitches. Restarting clears minor system errors.
- Press and hold the Side key and Volume Down key together.
- Tap Restart, and then wait for the phone to reboot.
App Lock is an important feature for privacy. With these fixes, your Galaxy S25 FE should once again protect your apps without problems.
FAQs
Why does App Lock turn off by itself on my Galaxy S25 FE?
This often happens when battery optimization restricts it. Removing App Lock from background limits usually fixes the issue.
Can third-party apps interfere with App Lock?
Yes. Some third-party security or cleaner apps may disable Samsung’s App Lock. Uninstalling or disabling them can help.
Is App Lock safe to use on the Galaxy S25 FE?
Yes. It is built into One UI and designed to protect your apps. It works best when kept updated and excluded from battery restrictions.
