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