Which operating system is commonly used on mobile devices?

The operating system commonly used on mobile devices is iOS. iOS is developed by Apple and is specifically designed for its mobile devices, such as the iPhone and iPad. It provides a user-friendly interface that is optimized for touch input, making it suitable for mobile environments where users interact primarily through gestures and taps.

In addition, iOS supports a wide range of applications available through the App Store, which enhances its functionality and user experience. Its strong emphasis on security and privacy, along with regular updates and support from Apple, contribute to its popularity among consumers and developers alike.

Although other operating systems like Linux can be used in various contexts, they are not typically associated with mainstream mobile devices in the same way iOS is. Windows and MacOS, on the other hand, are primarily designed for desktop and laptop computers, rather than mobile environments.