How to use app lock

Android
iOS
Web and Desktop
As an additional security measure, you can use app lock for WhatsApp on your phone. When turned on, you'll have to use your fingerprint or facial recognition to unlock the app. You can still answer calls if the app is locked.
To use this feature, you'll need to set up biometrics such as fingerprint or facial recognition in your phone's settings.
Turn app lock on
  1. Open WhatsApp Settings > tap Privacy > Fingerprint lock.
  2. Turn on Unlock with fingerprint.
  3. Touch the fingerprint sensor or scan your face to confirm.
  4. Optionally, you can tap to select the amount of time before fingerprint authentication is prompted.
    • Turn on Show content in notifications if you'd like to preview message text inside new message notifications.
Turn app lock off
  1. Open WhatsApp Settings > tap Privacy > Fingerprint lock.
  2. Turn off Unlock with fingerprint.
Note:
  • App lock is only available on Android devices with a fingerprint sensor running Android 6.0+ that support the Google fingerprint API.
  • facial recognition is only available on Android devices with a face scanner.
  • This feature isn't supported on the Samsung Galaxy S5, Samsung Galaxy Note 4, or Samsung Galaxy Note 8.
  • The face and fingerprint authentication takes place entirely on your device. By design, WhatsApp can't access the biometric information stored by your device's operating system.
Related resources
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