The various important android versions are as follows. The latest version of the android is 4.4.3 know as Kitkat. Google has released various version of android. Android is the world's leading Mobile operating system as most of the users use it due its open source and are user friendly. The growth of Android powered phones is increasing in a tremendous way. Android is a mobile operating which is based on Linux kernel and are owned by Google. Most of the Samsung devices are powered by Android Operating system. They have a wide range of smart phones in various segments ranging from Top end, mid end and Bottom End. Samsung is a South Korean company who are the leading manufacturer of Smartphone's.