Its been just few hours since Samsung began rolling out the official KitKat update to its flagship smartphone Galaxy S4 (LTE model) in US. Now the chocolate wafer flavored firmware OS has been pushed to the Exynos processor based 3G variant.

Samsung community website, SamMobile has claimed that the Galaxy S4 (GT-I9500) owners in Russia have begun receiving the latest v4.4.2 KitKat OS (build version: I9500XXUFNB3) and if history is any guide, Indian market is expected to receive the latest Android software soon, probably within a week's time.

To check for OS update via OTA:

Go to Settings >> More >> About >> Software Update >> download

Some of notable improvements in new OS update are the introduction of Camera short-cut on the lock-screen for easy access, white status bar icons, improved keyboard layout, immersive mode in music app, Hangouts messaging app, enhancements in the smartphone's performance, wireless printing and more.

In India, Samsung has already rolled out new OS update to its flagship phablet Galaxy Note 3.

Description of Key features of Android v4.4 KitKat OS update includes:

Improved Caller-ID: If a caller receives a call from unknown number, the phone will look for matches on the net with local listings via Google Maps.

Priority Contacts: The new OS empowers the phone to automatically prioritize contact list for easy access, based on the frequency of calls made to a certain number. 

Immersive display: To enhancethe entertainment factor, the new  OS comes with immersive mode, where the status bar and navigation buttons disappear in to the back ground while you play music, games and read e-books. Users can just swipe the edge of the screen to bring backtheutility buttons.

Enhanced Message grouping: Google has brought in some improvements to the new Hangouts app; now, users can find all their text SMSs and MMSs, audio and video call details all at one place. He/She can also share location and send animated GIFs.

Emoji Characters:  Initially users had to install third party app to use colorful characters in their SMS. Now, with KitKat update, the keypad comes pre-loaded with native Japanese Emoji emotion icons.

NFC and Wireless Printing: Google's new OS comes with a new Quickoffice app where-in people can create and store word documents in cloud storage as well as print files wirelessly on NFC-enabled HP printers.

Multi-tasking: With efficient memory management, users can multi-task by opening multiple applications; Listen to music while you can browse through the net.  

Performance: Like all software updates, the new KitKat enhances smartphone's performance as well as efficient RAM management, leading to an increase in battery life