The update is about 230.7MB big ,so make sure you have enough data or over wifi. Once updated, the phone will get a new dialer app, SMS/MMS integration onto Google Hangouts, a new editing feature in the photo gallery and support for printing via Wi-Fi, Bluetooth and Google Cloud Print. Additionally, KitKat also brings a redesigned status bar, battery efficiency, and more colored emojis.
>Update<
*Kitkat
4.4 Supports OTG Cable *
We can follow these steps to update our android into Kit-Kat :
Go to settings>About Phone.
Select System Updates.
Click on download and once that is done, Install.
*NOTE* : We cannot downgrade our android version after installing this update. The update change log follows: