Android is a mobile operating system developed by Google, based on the Linux kernel and designed primarily for touchscreen mobile devices such as smartphones and tablets. Android's source code is released by Google under an open source license, although most Android devices ultimately ship with a combination of free and open source and proprietary software.The first beta version of the Android Software Development Kit (SDK) was released by Google in 2007 where as the first commercial version, Android 1.0, was released in September 2008. For further detail about Android application you can learn at Android Training In Lucknow.