Telegram is a highly secure messaging app available across multiple platforms, including Android, iOS, Windows, macOS, and Linux. To download Telegram, visit your device’s app store, search for “Telegram,” and install the app. After installation, you’ll be prompted to register using your phone number. Telegram uses a cloud-based system that ensures all your messages are synced across devices, so you can easily switch between phone, tablet, and computer without losing any data. The app is quick to set up and designed with an intuitive interface, making it easy for users to begin chatting right away.