Cerberus Lock Screen Protector

LSDroid

About this app

Some device manufacturers do not provide an option to protect the quick settings or the shutdown menu with a password, so a thief could swipe down from the lock screen and disable the internet connection or shut down the phone, rendering any anti-theft or device locator app useless.

With this app you can avoid that: if your phone gets stolen you will still be able to locate and track it!

This app is free, yet if you want to have a complete protection for your phone, yourself and your loved ones you can subscribe to the Cerberus suite (Cerberus Anti-theft, Cerberus Persona and Cerberus Kids)

This app uses Device Administration to turn off the screen and lock it when the power off menu or quick settings are being displayed.

This app uses Accessibility services to monitor the lock screen and block the power off menu and quick settings. It does not collect or send any information.

Ratings and reviews

I love the idea of the app. But when the shutdown / restart menu appears, there is a small moment in which, if the thief is fast enough, he can press the shutdown button. On the other hand. I don't use the option to block the quick access buttons, I just want to block the change of state of the network, I don't want to block all the buttons on my lock screen. I preferred to hide the tile that controls the network connection and to continue using the other quick access. Thanks✌🏻

Good concept and app works as advertised - but with some serious limitations. Recently it has started to block Google Assistant in the lock screen from responding to voice commands (its most common use case) when "Block Quick Settings" is turned on. Any attempt to use GA also admin-locks the device. Please fix this as it's making the app by unusable.

Doesn't work, only shuts down the screen after a peak with a delay that's enough for me to turn off the wifi or anything i want. As for the power button, i think it works fine. It also disables fingerprint sensor, which is annoying.

What's new

Fixed a false identification of the power menu on some Android 14 devices
Small bugfixes and performance improvements