The latest version of Apple software is iOS 15.1.1.

iOS is a mobile operating system developed by Apple. Apple first announced this system at the Macworld conference on January 9, 2007. It was originally designed for iPhone, and was later applied to iPod touch and iPad. iOS, like Apple's macOS operating system, is a Unix-like commercial operating system.

Originally, this system was called iPhone OS. Because iPad, iPhone, and iPod touch all use iPhone OS, it was announced at WWDC in 2010 that it was renamed to iOS (iOS is a registered trademark of Cisco Network Equipment Operating System of the United States, Apple The name change has been authorized by Cisco Corporation).

In January 2016, with the release of iOS 9.2.1, Apple fixed a vulnerability that had existed for 3 years. On September 22, 2018, Apple in the United States secretly added a "trust rating" function based on iPhone users and other device users of the company in its latest operating system.

According to 9to5 Mac reports on November 17, 2021, Apple’s iOS 15.2 Beta leaked the new “SportsKit” framework.

Development History

On January 9, 2007, Apple announced it at the Macworld exhibition. At that time, Jobs called it "iPhone runs OS X". In June of the same year, the first version of iOS Operating system release.

On October 17, 2007, Apple released the first localized iPhone application development kit (SDK), and plans to send it to every developer and developer in February.

On March 6, 2008, Apple released the first beta development kit and renamed "iPhone runs OS X" to "iPhone OS".

In September 2008, Apple changed the iPod touch system to "iPhone OS".

On February 27, 2010, Apple released the iPad, which was also equipped with "iPhone OS". This year, Apple redesigned the system structure and built-in programs of "iPhone OS".

In June 2010, Apple changed the name of "iPhone OS" to "iOS" and also obtained the name authorization of Cisco iOS.