IMPORTANT: This app uses the Device Administrator permission. Quick Lock, a simple app for Android which allows you to screen off and lock the device. It's super easy to use and saves power button usage. Support Android 4.0.x and above. Features inside: - One touch lock using shortcut or notification. - Vibrate upon lock. - Lock sound - More to come... Additional features: - Change ringer mode easier and instantly. - Support usage via shortcut and notification too. Uninstall note: Deactivate