Mobile operating system

A mobile operating system is the operating system that runs on smartphones, tablets, smartwatches, smartglasses and other personal mobile computing devices that are not laptops. It combines features of a desktop computer operating system with features useful for mobile or handheld use, usually including a built in wireless modem and a SIM tray for telephone and data connection. Laptops are mobile in the everyday sense, but their operating systems are not usually called mobile, because they were first designed for desktop computers. A phone with mobile communications abilities in fact carries two mobile operating systems: the user facing software platform, and a second low level proprietary real time operating system that runs the radio and other hardware, which research has shown may contain security vulnerabilities. Since 2017 mobile operating systems have had the most use of any operating system, measured by web use.