IPhone OS 2

iPhone OS 2
Version of the iOS operating system
	iPhone OS 2 running on an iPhone 3G
Developer	Apple Inc.
Source model	Closed, with open source components
Initial release	July 11, 2008
Latest release	2.2.1 (5H11 / 5H11a) / January 27, 2009
Update method	iTunes through a computer
Package manager	App Store
Platforms	iPhone; iPhone (1st generation); iPhone 3G; iPod Touch; iPod Touch (1st generation); iPod Touch (2nd generation);
Kernel type	Hybrid (XNU)
License	Proprietary except for open-source components
Preceded by	iPhone OS 1
Succeeded by	iPhone OS 3
Official website	Apple - iPhone - Software Update - 2.0.0 at the Wayback Machine (archived September 12, 2008)
Support status
	Obsolete, unsupported

iPhone OS 2 is the second major release of the iOS mobile operating system developed by Apple Inc., being the successor to iPhone OS 1. It was the first version of iOS to support third-party applications via the App Store. iPhone OS 2.2.1 is the final version of iPhone OS 2. It was succeeded by iPhone OS 3 on June 17, 2009.

iPhone OS 2 became available on July 11, 2008 with the release of the iPhone 3G. iPhones and iPod Touches running iPhone OS 1 are upgradable to this version. This version of iOS introduces the App Store, making third-party applications officially available to the iPhone and iPod Touch. Prior to the public release of iPhone OS 2, Apple held a keynote event to announce the iPhone OS Software Development Kit ("SDK") to developers. Originally it was called 1.2.^[2]

^ Patel, Nilay (June 30, 2010). "iPhone OS 2 apps no longer welcome on the App Store". Engadget. Archived from the original on September 16, 2018. Retrieved December 27, 2016.
^ Wilson, Ben (December 5, 2008). "First downloadable application for iPhone OS 1.2 "Aspen"". CNET. Archived from the original on July 16, 2020. Retrieved July 15, 2020.

[1] Patel, Nilay (June 30, 2010). "iPhone OS 2 apps no longer welcome on the App Store". Engadget. Archived from the original on September 16, 2018. Retrieved December 27, 2016.

[2] Wilson, Ben (December 5, 2008). "First downloadable application for iPhone OS 1.2 "Aspen"". CNET. Archived from the original on July 16, 2020. Retrieved July 15, 2020.

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