Screen Lock : turn off screen

4.5
1.11K reviews
5K+
Downloads
Content rating
Rated for 3+
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About this app

【The free version has more than 4,800,000 downloads】

◎ 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.
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 perform other actions.

★ You can set the buttons to display in different locations:
- Display on home screen
- Display in the notification panel
- (Floating button/Assistive Touch/Floating ball) 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 screen with biometric authentication (fingerprint/iris/face)
- (Assistive Touch) Show "Quick Menu" to quickly access your favorite apps, games, settings
- Support other actions when the button is pressed:
↪ Application shortcuts
↪ RAM cleaner (system speed booster)/Flashlight
↪ Home key/Back key/Recent apps/Last used app
↪ System settings/Notification panel
↪ Power off phone (Power menu)/Screen capture (Screenshot)/Screen recorder (Android 5.0 and above)
↪ Media control (play/stop/next track/previous track)/Volume control
↪ Keep screen on/Open Web page

★ Features of the floating button:
- Adjustable button size/opacity
- Display weather information/clock widget
- 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 : Support open or close the smart cover to wake up or turn off screen
- Long-press the Home button to lock screen or do the actions (Android 7.0 and above)
- Shake phone to lock screen or do the actions
- Block touch screen : Block touch screen to prevent accidental touch when watching videos, especially when children are watching. (Android 4.4 and above)

★ 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 requires Accessibility Services to support the following features.
↪ Turn off or lock screen
↪ Home key/Back key/Recent apps/Last used app
↪ Make the floating button automatically show/hide
↪ Power off phone (Power menu)/Screen capture (Screenshot)/Screen recorder
↪ Media control (play/stop/next track/previous track)
↪ Block touch screen
Updated on
Jun 12, 2022

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection
4.5
1.11K reviews
Tarek Selim
February 11, 2022
I have been using this app for several years. It is very useful. I consider it a "MUST HAVE" app. Also customer support it more than excellent. When I reported a problem few day ago, they were very prompt and keen to solve it. They kept following up with me untill the problem was solved. Thank you very much to the developers, I really appreciate what they have done 👍. They deserve more than ⭐⭐⭐⭐⭐.
12 people found this review helpful
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Simi Studio
February 11, 2022
We will continue to work hard to make it better. Thank you for your detailed comments and ratings. This is a great encouragement for us, thank you. Thank you for your use and rating. 😁
Abdul Rashid R
May 20, 2022
finally in latest update block touch screen working in Amazon prime video in Full scree mode. Thanks for solving my problem...
3 people found this review helpful
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Simi Studio
May 20, 2022
Thank you for your comments and rating. ❤️ Your support is the driving force behind our continuous efforts to provide better products.
Eli Nazzaro
August 9, 2020
Excellent! I tried this app a while ago when I was looking for a way to lock my phone by touch screen. It did exactly what I needed it to do. So I used the free version for quite awhile. I noticed that the developer continued to improve functionality and add features. This already good app proceeded to get better and better. And the added features are not just gimmicky; they are really useful. I ended up buying the app, and I rarely buy apps. This is a great screen locker and a whole lot more.
15 people found this review helpful
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Simi Studio
August 10, 2020
Thank you for your reviews and rating. ❤️ Your support is the driving force behind our continuous efforts to provide better products

What's new

[v10.7] 2022.06.10
◈ (Floating button) Add battery level icon
◈ (Floating button) Fixed that the button opacity is reset
◈ Bug fixes

[v10.6] 2022.05.10
◈ (Floating button) Fixed that an unexpected long press action happens when double-clicking the button
◈ Add more icons
◈ Bug fixes

[v10.5] 2022.04.10
◈ Support to display the Accessibility button at the bottom of the screen (Android 8.0+)
◈ Bug fixes