Tools
(1022 ratings)

Screenshot

【The free version has more than 4,200,000 downloads】

◎ Features in the paid version Only:
- AdFree
- Lighter and better performance
- Unlimited access to all features


Just one touch to turn off and lock the screen.
Frequent use to turn the screen on/off can easily damage the phone's hardware power button. We provide software buttons to replace it and extend its useful life.

★ You can set the buttons to display in different locations:
- Display on home screen
- Display in the notification panel
- (floating button) Floating on other apps

★ Features for all buttons:
- Built-in lots of free icons or your custom icons
- Vibration/sound/animation of the locking process
- Fix can't unlock the screen with biometric authentication (fingerprint/iris/face)
- (Assistive Touch) Show "Quick Menu" to quickly access your favorite apps, games, settings

★ Features of the floating button:
- Adjustable button size/opacity
- Display weather information
- Multiple button shapes (round/rectangular/narrow bar/love)
- Automatically show/hide when the screen is in the fullscreen mode or the selected application is displayed
- Single tap/double tap/swipe the button to trigger the actions:
↪ APP shortcuts
↪ RAM cleaner (speed booster)/Flashlight
↪ Home key/Back key/Recent apps/Last used app
↪ System settings/Notification panel
↪ Screen capture/Screen recorder/Power menu (Android 5.0 and above)

★ Advanced features:
- Wave your hand over the proximity sensor (near the front camera) to wake up or lock the screen
- Long-press the Home button to lock the screen or do the actions (Android 7.0 and above)
- Shake the phone to lock the screen or do the actions
- Block the touch screen to prevent accidental touch when watching videos, especially when children are watching. (Android 4.4 and above)

★ Permissions required:
- 👉 If you enable the Device Administrator permission to lock the screen when you want to uninstall the application, you must manually disable the Device Administrator permission first or uninstall it from the "Uninstall app" option in the application settings. This is to follow the Android security guidelines.👈
- This application requires Accessibility Services to support the following features.
↪ Turn off or lock the screen
↪ Home key/Back key/Recent apps/Last used app
↪ Make the floating button automatically show/hide

★ FAQ:
https://simistudio.net/screenlock/faq.html
From version Screen Lock 10.0:

[v10.0] 2021.11.10
◈ Supports Android 12
◈ (Floating button) Support to adjust the long press duration
◈ (Floating button) Support to automatically show/hide the button in portrait or landscape mode
◈ Bug fixes

[v9.8] 2021.10.10
◈ (Floating button) Supports the digital clock icons
◈ (Floating button) Supports the display of the floating button during recording the screen
◈ Bug fixes

[v9.7] 2021.09.10
◈ Support more button actions
◈ Bug fixes

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