Android 11 is a version of the Android operating system developed by Google for mobile devices. Released in September 2020, it introduced several new features aimed at improving user experience, privacy, and security. Key enhancements include a dedicated conversation section in the notification shade, allowing users to manage messages from various apps more easily. Additionally, Android 11 offers improved media controls, enabling users to switch between audio devices seamlessly. It also includes enhanced privacy settings, such as one-time permissions for apps, giving users more control over their data. Overall, Android 11 focuses on making smartphones more intuitive and secure.