All text messages, chats, and video calls rely on end-to-end encryption so you can be confident that nothing can be monitored on the Watts of waterAnd it is possible to make WhatsApp more secure, by protecting the application itself with any biometric security on your phone, such as fingerprints or Face ID, and in this way, even if someone takes possession of your phone, your WhatsApp messages will remain safe.
How to lock WhatsApp on Android
According to business insider, you can use your Android phone’s fingerprint reader to make sure that you’re the only person who can open the app.
1. Open WhatsApp on your Android device.
2. Tap on the three dots menu in the upper right corner of the screen and then choose Settings.
3. Click on Privacy.
4. At the bottom of the screen, tap Fingerprint lock.
5. On the Fingerprint lock screen, turn on Fingerprint unlock by pressing the toggle button on the right.
6. Confirm your fingerprint by touching the sensor with one of the fingers you have registered to the phone.
7. Choose how long it takes for WhatsApp to scan the fingerprint to re-enter the app after closing it, and you can choose immediately, after 1 minute, or after 30 minutes.
How to lock WhatsApp on iPhone
You can lock WhatsApp on your iPhone using Face ID or Touch ID, depending on which iPhone model you have, and no matter which iPhone you’re using, the process is the same.
1. Open the WhatsApp application on your iPhone.
2. Tap on Settings in the lower right corner of the screen.
3. Click on Privacy.
4. At the bottom of the screen, tap Lock screen.
5. On the Screen Lock page, you will see either Require Face ID or Require Touch ID, and tap the toggle next to this option to turn this security feature on.
6. Choose how long before WhatsApp asks Face ID or Touch ID to re-enter the app after closing it, and you can choose immediately, after 1 minute, after 15 minutes, or after 1 hour.