Mobile devices have an operating system as any computer does. The mobile operating system can be proprietary to a particular vendor, but three common mobile operating systems are Android, iOS, and Windows.
ANDROID OPERATING SYSTEM (OS)
Android is an open source operating system that is based on the Linux kernel and used for phones and tablets, but is available on laptops and PCs. Open source operating systems allow vendors to use the core source code and gives vendors the ability to customize the operating system. Google, Inc. purchased Android in 2005 and it continues to be the most popular mobile operating system (mobile OS) in the world.
IPHONE OPERATING SYSTEM (IOS)
Apple’s iOS is found only on Apple devices. This is an example of a closed source or vendor-specific operating system. This type of operating system is not allowed to be modified or distributed by anyone other than those designated by the developer such as Apple Inc.
WINDOW MOBILE OPERATING SYSTEM
Microsoft has several closed source Windows Mobile operating systems that relate to mobile devices. Note that some mobile devices support the normal Windows desktop operating system versions. Here are the ones specifically related to mobile devices that are not the full version of Windows:Windows Phone: A family of operating systems designed for smartphones.
Windows 10 Mobile: Successor to Windows Phone that integrates some features common to the Windows desktop and mobile devices into smartphones and small tablets.
Windows RT: An operating system based on reduced instruction set computing (RISC) architectures, which allows for thinner, lighter, cooler mobile devices and can run longer on battery. Only executes software digitally signed by Microsoft and Windows Store apps.