Google abandoned the fingerprint sensor and opted instead for facial recognition on the Pixel 4 and Pixel 4 XL. If you didn't activate Face Unlock during the phone setup process, here's how to set it up from the Settings menu.
To get started, swipe down twice on the home screen to display quick setting thumbnails. Tap the gear icon to access the Settings menu.
Alternatively, you can swipe the home screen to display the app drawer. From there, scroll down and select the "Settings" app.
Then scroll down and tap on the "Security" option.
Before continuing, make sure the screen lock is activated. If you don't have a password, PIN or template set up to unlock your Pixel 4 or Pixel 4 XL, you will need to press "Screen Lock" and follow the instructions on the screen. 39; screen.
With your handset now secure, press the "Face Unlock" option to configure the facial recognition feature.
Your phone will now explain how Face Unlock works and will warn you that the feature works even if you are not looking directly at the device. Press the "Next" button to continue.
The Pixel 4 will now explain how to hold the phone and rotate your head while setting up Face Unlock. Select the "Start" button to start the configuration process.
Select the option "Configuration for limited vision or head movement" if any of these things apply to you. This will provide you with more accessible instructions for setting up Face Unlock.
Follow the on-screen instructions to configure facial recognition unlocking. Keep turning your head until all the blue boxes are gone.
Once complete, Face Unlock should be set up and ready to go. Press the "Done" button to exit the installation process.
You can now test Face Unlock by pressing the power button and locking Google Pixel 4 or Pixel 4 XL. Tap the screen or tap the power button again and watch the handset unlock almost instantly.