Two months later than expected, AT&T has today started pushing out the much-anticipated Android 4.4.2 KitKat over-the-air update to all of 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%.

In terms of functionality, Android 4.4.2 is a significant upgrade from 4.3, packing a completely redesigned user interface, now with built-in SMS message integration in the standard Hangouts application, Google Now on the home screen, Wi-Fi printing capabilities for HP ePrinters, autocomplete for the traditional telephone dialer and lots, lots more.

The full changelog for this hefty upgrade, courtesy of AT&T, can be seen below:

• Improved user interface with Android 4.4 KitKat: The latest version of Android includes enhancements such as restyled status and navigation bars, a new full-screen mode, improved closed captioning support, and stronger security.
• Improved battery efficiency: the phone plays music more efficiently and supports the battery-saving location mode, extending battery life.
• Faster processing speed: The latest version of Android provides a noticeable speed boost that runs applications 17 percent faster than before and web-browsing speed is mproved with the Chromium engine.
• Printing in the Cloud: Google Cloud Printer makes it simple to print documents via Wi-Fi or a Bluetooth connection.
• Enhanced “Knock On” feature.

If you own a AT&T-branded 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. Please ensure you have at least 50% of battery, though, otherwise the update will not appear.

• SourceAT&T