Android 4.4–4.4.4 "KitKat" is a version of the Android mobile operating system developed by Google, spanning versions between 4.4 and 4.4.4. Unveiled on September 3, 2013, KitKat focused primarily on optimizing the operating system for improved performance on entry-level devices with limited resources.
== History ==
Android 4.4 "KitKat" was officially announced on September 3, 2013. The release was internally codenamed "Key Lime Pie"; John Lagerling, director of Android global partnerships, and his team, decided to drop the name, arguing that "very few people actually know the taste of a key lime...