different types of systems
The is the operating system that samsung uses in all its phones.It was developed by google and is the most used operating system on mobile. It has a interface that works with touch screens and is quite customizable. Two things that android is known for are the fact that it names its different versions after different types of candy. And the fact that it has a burning rivalry with apples OSX.
Apple's mobile operating system is very similar to androids in terms of interface. Unlike android OSX tries to be more user friendly by limiting the amount of complicated customization options. Different versions of OSX have been used in all of the iPhones, iPads, iPad minis, MacBooks, MacBooks Pros, iMacs and Macbook Airs.
Unlike the X box one the PS4's operating system focuses more on the gaming experience then anything else it breaks the game up into different parts that can be accessed from the screen rather then needing to enter the game then accessing those parts. Un fortunately this means that it will be hard for developers to make there software compatible with the system.