Screen Lock : turn off screen

Contains adsIn-app purchases
4.5
53K reviews
1M+
Downloads
Content rating
Teen
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About this app

【Over 5,300,000 downloads to date】

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 - RAM cleaner (system speed booster)/Flashlight
↪ Built-in functions - 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
Updated on
Dec 5, 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.
This app may share these data types with third parties
App activity, App info and performance, and Device or other IDs
This app may collect these data types
App info and performance and Device or other IDs
Data is encrypted in transit
Data can’t be deleted
4.5
53K reviews
Kaykayswagger111MSP
October 28, 2022
This app is honestly amazing. It does as advertised. My button fell off of my phone and I accidentally flushed it down the toilet (yeah ik 🤦🤦) and I couldn't get a replacement so I looked for an app that would give me a on screen button similar to iphone and this does just that and you can customize the button to look like whatever you want lol, I'm honestly so glad I found this app, it's an actual life saver. I haven't had any problems with it so far, I recommend it
9 people found this review helpful
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Simi Studio
October 30, 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.
Thetreeboy
December 6, 2022
Been using for a while now and I gotta say, while it was confusing and weird at first its super customizable and usefull. My phone screen buggs out from time to time and spam clicks the screen even if nothing is touching it, this can be annoying because I listen to music a lot and it will skip the songs. So this app is perfect! It locks the screen and is easy to use.
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Simi Studio
December 7, 2022
Thank you for your comments and rating. ❤️ Your support is the driving force behind our continuous efforts to provide better products.
Anthony Tomasino
September 11, 2021
Does what it should do. I needed a home screen icon to lock my phone. I saw another review that was low and complained they had to click an ad before using it. I'm not sure what they're talking about. Maybe there was an ad when I first opened it, I can't remember (because even if there was it was inconsequential). The lock button works instantly with no ads. A single ad when you first launch it that never interferes with actual use seems like a completely fair trade off for the app being free.
39 people found this review helpful
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Simi Studio
September 13, 2021
Thank you for your comments and rating. ❤️ Your support is the driving force behind our continuous efforts to provide better products.

What's new

[v11.2] 2022.11.10
◈ Add search function in the action picker page
◈ Support to return to Home screen first when locking
◈ Bug fixes

[v11.1] 2022.10.10
◈ Support Android 13
◈ Bug fixes

[v11.0] 2022.09.10
◈ Add more icons
◈ (Quick Menu) Support for changing button icons
◈ Apply new icon picker