No one will be able to read your private chats on WhatsApp, lock the app like this
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How to lock WhatsApp on Android:
1. First of all open WhatsApp on your Android device.
2. Tap on the menu with three dots at the top right of the screen. After that choose Settings.
3. Then tap on Account.
4. Tap on Privacy.
5. Then you have to tap Fingerprint lock.
6. On the fingerprint lock screen, swipe the button to the right, and then turn on the option to unlock with fingerprint. You will need to register the same fingerprint you have registered to unlock your phone to verify your fingerprint.
7. After this you will be able to unlock your app with fingerprint.
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How to lock WhatsApp on iPhone:
You can lock WhatsApp on your iPhone with Face ID or Touch ID. It depends on which model phone you have. Whichever iPhone you have, the process is the same.
1. Open WhatsApp on your iPhone.
2. Tap Settings at the bottom right of the screen.
3. Tap on Privacy.
5. At the bottom of the screen, tap Screen lock.
6. On the Screen Lock page, you need to choose either Face ID or Touch ID. To turn on this security feature, swipe the button to the right.
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