: These are tools for broadcasting messages to large audiences. They can be Public (searchable by anyone) or Private (accessible only via an invite link).

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

: Use the global search bar to find public channels or groups by typing their name or topic.

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

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