Comparison and difference between Android KitKat & Lollipop
Read this thread to know the detailed comparison and differences between Android KitKat and Android Lollipop operating system.
What are the main differences between Android KitKat & Lollipop operating system? I have not seen any major differences between them and the same goes to earlier version viz. Android Jelly Bean vs KitKat. The differences what I could observe are little changes in settings option. You may let us know if there are any extra features in KitKat and Lollipop OS.