Google has formally launched the Android 4.4 KitKat with the launch of Nexus 5 smartphone. It is said to be simpler and smarter version of all Android versions released till date.
Android KitKat brings a much simpler voice search; when on your home screen* or in Google Now, just say “Ok Google” to launch voice search, send a text, get directions or even play a song.
While reading e-books, watching movies or while playing games, everything else apart from the content will be hidden. You though can bring back the status bar and navigation buttons by swiping the edge of the touchscreen.
Besides, the Android KitKat introduces HDR+ mode that snaps a rapid burst of photos and combines them to give you the best possible single shot.