Mobile Operating Systems

A mobile operating system (OS) is a collection of software that manages a mobile device's hardware and software resources and provides a platform for running applications. Mobile operating systems are an essential component of smartphones and other mobile devices and are responsible for managing the interactions between the hardware and software.
The first mobile phones did not have operating systems and were limited to making and receiving phone calls. In the 1990s, the first smartphones were introduced, which had the ability to run applications and access the internet.
These early smartphones used operating systems that were similar to those used on personal computers (PCs).Over the years, mobile operating systems have evolved and become more sophisticated, with the addition of new features and capabilities. Today, there are several major mobile operating systems in use, including iOS, Android, Nokia Symbian, and BlackBerry OS.
iOS
iOS is a proprietary mobile operating system developed by Apple for its line of iPhone and iPad devices. The first version of iOS, called iPhone OS 1, was released in 2007. Since then, there have been several versions of iOS, including iOS 5, iOS 9, and the latest version, iOS 15.
iOS is a closed-source operating system, meaning the source code is not available for users to modify or distribute. iOS is known for its user-friendly interface and is popular with users who prefer Apple's hardware and software ecosystem. iOS is also used by developers due to the availability of a wide range of development tools and the popularity of Apple's iPhone and iPad.
Android
Android is a popular mobile operating system developed by Google. The first version of Android, called Android 1.0, was released in 2008. Since then, there have been several versions of Android, including Android 2.3, Android 4.4, and the latest version, Android 12.
Android is an open-source operating system, meaning the source code is available for users to modify and distribute. Android is widely used on a variety of devices, including smartphones, tablets, and smartwatches. Android is known for its flexibility and the availability of a wide range of applications through the Google Play Store.
Nokia Symbian
Nokia Symbian was a mobile operating system developed by Nokia for its line of smartphones. The first version of Symbian, called Symbian OS 6.1, was released in 1999. Symbian was one of the first mobile operating systems to support smartphones and was widely used on Nokia's smartphones in the 2000s.
Symbian was a closed-source operating system and was known for its stability and security. However, it was eventually replaced by Android and iOS as the dominant mobile operating systems.
BlackBerry OS
BlackBerry OS was a mobile operating system developed by BlackBerry for its line of BlackBerry smartphones. The first version of BlackBerry OS, called BlackBerry OS 1.0, was released in 1999. Since then, there have been several versions of BlackBerry OS, including BlackBerry OS 5, BlackBerry OS 10, and the latest version, BlackBerry OS 11.