Sprint is currently in the process of pushing out the much-anticipated Android 4.4.2 KitKat over-the-air update to all its carrier-branded LG G2 flagship smartphones located in the United States. In addition to the latest build of the open-source operating system, this upgrade also improves battery efficiency, enhances the Knock On feature and, finally, increases the processing speed by a whopping 17%.

Android 4.4.2 is a rather substantial upgrade when compared to 4.3, packing a completely redesigned user interface, SMS message integration in the standard Hangouts application, Google Now on the home screen, Wi-Fi printing capabilities for HP ePrinters and Google Print customers, autocomplete for the traditional telephone dialer, Emoji integration for Google Keyboard, built-in word processing software and lots more.

The full changelog for this rather hefty 300MB update can be seen below:

• Android 4.4.2 OS upgrade.
• Fix Next Radio audio issue.
• LG Knock Code.
• Improved system performance.

For those unaware, Knock Code is a development from the incredibly-popular Knock On function that made its debut appearance last year, which enables users to power on their smartphone by simply tapping the screen in any one of 86,367 different combinations.

If you reside in the United States and own a Sprint-branded variant of the LG G2, and have not yet received the OTA update, you can head into “Settings,” then “About Device,” and select “Check for Updates” to manually scan for the upgrade.

• SourceSprint