Android is a mobile operating system based on a modified versio... - dofaq.co
android (operating system)

Android is a mobile operating system based on a modified versio...

wikipedia - 26 Oct 2020
Android is a mobile operating system based on a modified version of the Linux kernel and other open source software, designed primarily for touchscreen mobile devices such as smartphones and tablets. Android is developed by a consortium of developers known as the Open Handset Alliance and commercially sponsored by Google. It was unveiled in November 2007, with the first commercial Android device launched in September 2008.

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