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Android is a mobile operating system developed by Google. It is based on the Linux kernel and is designed primarily for touchscreen mobile devices such as smartphones and tablets. Android is the most widely used mobile operating system in the world, with a large and diverse ecosystem of apps and services. It is open-source, meaning that developers can modify and distribute the source code, and it is available on a wide range of devices from a variety of manufacturers. Android has a user interface that is based on direct manipulation, using touch gestures that loosely correspond to real-world actions, such as swiping, tapping, and pinching, to manipulate on-screen objects. It also includes support for a variety of hardware components, such as cameras, GPS, and NFC, and has a rich set of features and capabilities that make it suitable for a wide range of applications.