Screen Lock : turn off screen

About Screen Lock : turn off screen Android App

【The free version has over 5,300,000 downloads to date】

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


Just one touch to turn off or lock screen or do other actions.
Frequent use to turn on/off screen can easily damage the phone's physical power button. We provide virtual buttons to replace it and extend its useful life. You can also set buttons to do other actions.

★ Buttons can be displayed in different positions, and press the button to immediately lock the screen or do other actions:
- Display the button on home screen
- Display the button in the notification panel
- Display the floating button over on all apps (Floating button/Assistive Touch/Floating ball)

★ Basic functions:
- Buttons can be replaced with over 100 free icons or use your own custom icons
- Vibration/sound/animation of the locking process
- Fix can't unlock screen with biometric authentication (fingerprint/iris/face) after locking the screen
- Besides locking the screen, you can also perform over 40 other built-in functions:
↪ (Assistive Touch) Show "Quick Menu" to quickly access your favorite apps, games, settings
↪ Launch other applications directly
↪ Built-in functions - Flashlight/Screen capture (Screenshot)/Screen recorder (Android 5.0 and above)
↪ Simulate system virtual keys - Home/Back/Recent apps/Last used app
↪ Launch system settings page/Pull down notification panel
↪ Do power off the phone (launch the system power menu)
↪ Simulate media control (play/stop/next track/previous track)/Volume control
↪ Built-in functions - Keep the screen always on
↪ Bookmark - open favorite web pages directly

★ Functions specific to the floating button:
- Adjustable button size/opacity
- Display weather information/clock widget on the button
- 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
- Easy touch : Single tap/double tap/swipe the button to trigger the action.

★ Advanced features:
- Air gesture : Wave your hand over the proximity sensor (near the front camera) to wake up or lock screen
- Smart flip cover : Open or close the smart cover to wake up or turn off the screen
- Long press the Home button to lock screen or do other actions (Android 7.0 and above)
- Shake phone to lock the screen or do other actions
- Block touch screen : Block the touch screen to prevent accidental touch when watching videos, especially when children are watching.

★ FAQ:
https://simistudio.net/screenlock/faq.html



★ Permissions required:
- ? If you enable the Device Administrator permission, 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 only requires the Accessibility Services before using the following features.
↪ Turn off or lock the screen
↪ Simulate system virtual keys - Home/Back/Recent apps/Last used app
↪ Make the floating button automatically show/hide
↪ Built-in functions - Screen capture (Screenshot)/Screen recorder
↪ Do power off the phone (launch the system power menu)
↪ Simulate media control (play/stop/next track/previous track)
↪ Block touch screen