: For extra security, enable a password that is required when logging in on a new device.

: In Settings > Privacy and Security , you can control who can see your phone number, profile photo, and last seen status.

: Tap the pencil icon to start a new chat with an existing contact.

: Go to Settings to set a unique @username . This allows others to find and message you without knowing your phone number. 2. Navigating Chats and Groups

: For maximum privacy, use "Secret Chats," which offer end-to-end encryption and the option for self-destructing messages. 3. Privacy and Security Settings

: Download the app from the Google Play Store or App Store. Register with your phone number and verify your identity.