If a lock is set for your screen, the screen goes dark and locks when the display goes to sleep or if you press the Power Button.
You can set locks of different strengths using the Screen Lock Settings
- Go to Settings > Personal > Security > Screen Lock
- Touch the type of lock you’d like to use
Even when your screen is locked you can perform certain activities
Slide down from the top of the screen to open Quick Settings without entering your password
Slide form right to left to open the Camera
Slide from left to right to make a phone call (first you have to enter your password).
Slide from left to right to make an emergency phone call without having to enter your password
If you have a device that’s set up for more than one user, you may need to touch your image at the bottom of the screen to see your own locked screen
You can turn on Smart Lock to keep your device unlocked when it’s clear that you have it with you - for example, when it’s connected to your Bluetooth watch or when it recognises your face.
TRUSTED DEVICES AND FACE MATCHING
You can set your device to stay unlocked while connected to a Bluetooth device — like a watch, fitness tracker, headset, or car speaker system.
You can also have your device unlock when it recognizes your face. After setting a trusted face, every time you turn on your device, it will search for your face and unlock if it recognizes you. Keep in mind that someone who looks similar to you could unlock your phone.
Note: Face matching doesn’t store any photos of you. Data used to recognize your face is only stored on your device and is not accessible by apps or backed up on Google servers.
PROTECT AGAINST HARMFUL APPS
Apps from Google Play are always verified by Google to protect you and your device from harm. By default, your device doesn’t allow the installation of apps from sources other than Google Play.
If you choose to allow the installation of apps from unknown sources and install apps from sources other than Google Play, it’s more likely that apps will be installed that could harm you or your device.
If you allow the installation of apps from unknown sources, the Verify Apps feature protects you when installing apps outside of Google Play by continually checking your device to make sure that all apps installed are behaving in a safe manner, even after installation.