Step 5: Set Up Security Features Security is an integral part of your Android phone. You should set up a PIN, password, or pattern to secure your device.

To set this up, open WhatsApp on your Android device and tap the three vertical dots in the upper-right corner. From the drop-down menu, select Settings, then tap Account.

Face Unlock: Some Android devices also support face unlock, allowing you to unlock your phone by simply looking at it. If your device has this feature, follow the on-screen instructions to set it up.