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Android KitKat is the codename for the eleventh Android mobile operating system, representing release version 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. As of October 2022, 1.39% of Android devices run KitKat. [2]
The second version of TouchWiz was released in 2011, to support Android Gingerbread and Android Honeycomb (2.3 - 3.2.6). The Galaxy S II was the first device preloaded with TouchWiz 4.0. This version includes better hardware acceleration than 3.0, as well multiple touchscreen options involving multi-touch gestures and using the phone's ...