Instead, Apple directed developers to create web apps which could be accessed from Safari. IPhone OS 1 did not have any App Store or a Software Development Kit (SDK) for third-party developers to create native applications. The iPhone OS 1.1.3 update cost $19.95 for iPod Touch users. IPhone OS 1.0 was released alongside the original iPhone, on June 29, 2007. At the time, Jobs only said the iPhone 'runs OS X', and according to Chicago Sun-Times columnist Andy Ihnatko, this was confirmed in official briefings and unofficial conversations. The iPhone OS was introduced at the Macworld Conference & Expo at the Moscone Convention Center in San Francisco, in a keynote address by Steve Jobs on January 9, 2007, along with the original iPhone. Although many thought it was a waste of time, Apple CEO Steve Jobs insisted on prototyping all concepts/ideas before the Mac OS-X-based version of the operating system was selected. Many user interfaces were prototyped, including the multi-touch click-wheel. The idea of introducing a complete touch screen was very novel to everyone. Many people on the team were still hung up on the idea that everyone would want to type on a hardware keyboard, not glass. Tony Fadell, who then led the iPhone team said 'It was a competing set of ideas, not teams, and we were all working on it' There were 16 to 17 different concepts. A team led by Jon Rubinstein worked on developing a lightweight Linux-based version, commonly referred to as Acorn, while another team led by Scott Forstall worked on developing a more compressed and streamlined version of the Mac OS X, codenamed purple, to run on the ARM chipset. There were two teams inside Apple that worked on creating the iPhone: one worked on converting the iPod into a phone and the other worked on compressing the Mac OS X to make it work on smaller devices like phones.

It was a completely secret project and at the time when the team was selected, even they weren't told what they were going to be working on. Only employees from within Apple were allowed to be a part of the iPhone development team. Further information: iOS version history § iPhone OS 1.0 Development history ĭevelopment of iPhone OS 1.0 and the first generation of iPhone Hardware was a combined effort.

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