Android 4.4 KitKat, released in October 2013, includes several performance improvements that make it possible to run the operating system on all Android devices, including older, memory-constrained devices, which are particularly popular in developing countries.7
7. http://techcrunch.com/2013/10/31/android-4-4-kitkat-google/
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Enabling more users to update to KitKat will reduce the “fragmentation” of Android versions in the market, which has been a challenge for developers who previously had to design apps to run across multiple versions of the operating system, or limit their potential market by targeting their apps to a specific version of the operating system.
Android KitKat also includes security and accessibility enhancements, improved graphics and multimedia capabilities, memory-use analysis tools and more. Figure 1.8 lists some of the key new KitKat features. For a complete list, see