|Version of the iOS operating system|
|Source model||Closed, with open source components|
|Initial release||June 29, 2007|
|Latest release||1.1.5 (4B1) / July 15, 2008|
|Platforms||iPhone (1st generation)|
iPod Touch (1st generation)
|Kernel type||Hybrid (XNU)|
|Succeeded by||iPhone OS 2|
|Official website||Apple - iPhone at the Wayback Machine (archived June 7, 2007)|
iPhone OS 1 (officially iPhone Software) is the first major release of iOS, Apple's mobile operating system. No official name was given on its initial release; Apple marketing literature simply stated that the iPhone runs a version of Apple's desktop operating system, OS X (later known as macOS). On March 6, 2008, with the release of the iPhone software development kit (iPhone SDK), Apple named it iPhone OS. It was succeeded by iPhone OS 2 on July 11, 2008.
Further information: iOS version history § iPhone OS 1
Development of iPhone OS 1 and the first generation of iPhone Hardware was a combined effort. Only employees from within Apple were allowed to be a part of the iPhone development team. 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. 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. 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. 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. Many people on the team were still hung up on the idea that everyone would want to type on a hardware keyboard, not glass. The idea of introducing a complete touch screen was very novel to everyone. Many user interfaces were prototyped, including the multi-touch click-wheel. 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.
iPhone OS 1 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. 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.
iPhone OS 1.0 was released alongside the iPhone, on June 29, 2007.
iPhone OS 1 did not have the App Store or a Software Development Kit (SDK) for third-party developers to create native applications. Instead, Apple directed developers to create website apps which could be accessed from Safari.
|Version||Release date||Major changes||Ref|
|1.0||June 29, 2007||Initial release for the original iPhone.
|1.0.1||July 31, 2007||
|1.0.2||August 21, 2007||Minor update|||
|1.1||September 14, 2007||Initial version for the new first generation iPod Touch, not released for iPhone
|1.1.1||September 27, 2007||
|1.1.2||November 12, 2007||Minor update|||
|1.1.3||January 15, 2008||
|1.1.4||February 26, 2008||Minor update|||
|1.1.5||July 15, 2008||Only released for the first generation iPod touch, for users unwilling to pay $10 to update to 2.0|||