The update is pushed OTA (over the air), in stages
The latest Android 4.4 KitKat update for US Cellular Moto X was previously tipped for a December 4 release and it looks like the information was accurate.Motorola has just updated its support website with an official announcement that confirms Android 4.4 KitKat is now available for US Cellular Moto X.
According to Motorola, “with this upgrade you get the latest version of the Android OS (Android 4.4 KitKat) as well as new features, enhancements and bug fixes for your Moto X.”
Keep in mind that once you apply the KitKat update for Moto X you won't be able to downgrade to a previous software version.
US Cellular is one of the last carriers to receive the Android 4.4 KitKat update for the Moto X (Sprint would be the last), but Motorola's smartphone is among the first to get the upgrade.
The update is pushed OTA (over the air) in stages, so it might take a while until it reaches all US Cellular Moto X devices.
However, those who have yet to be notified on the update can manually search for it by going to Settings / About phone / System updates / Download.
After the update is downloaded and installed make sure your phone is now updated to software version 143.44.2.ghost_usc.USC.en.US, which is the current Android 4.4 KitKat build for US Cellular Moto X.
Before attempting to apply the update, your Motorola Moto X should have the battery at least 50% charged and be connected to a stable Wi-Fi network for faster download speeds.
It is also worth mentioning US Cellular confirmed that there is no charge for this software upgrade over carrier network.
US Cellular Moto X owners will be able to enjoy lots of new enhancements included in the Andorid 4.4 KitKat upgrade, such as restyled status and navigation bars, a new full-screen mode, color emoji support, stronger security, and more tools and capabilities for better app development. More details on the update are available on Motorola support site.