|A version of the iOS operating system|
iPhone OS 1 running on a first-generation iPhone
|Closed, with open-source components|
|June 29, 2007; 10 years ago (2007-06-29)|
|1.1.5 (4B1) / July 15, 2008; 9 years ago (2008-07-15)|
|iPhone (1st generation)
iPod touch (1st generation)
|iPhone OS 2|
|iPhone at the Wayback Machine (archived June 7, 2007)|
|Unsupported as of Late 2009|
iPhone OS 1 is the first major release of iOS, Apple's mobile operating system. iPhone OS 1.1.5 is the latest and the last version of Apple's iPhone OS 1. This version of iOS was the first iteration of the touch-centric 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, macOS, then known as OS X. On March 6, 2008, with the release of the iPhone software development kit (iPhone SDK), Apple named it iPhone OS (they later went on to rename it "iOS" on June 7, 2010).
The update to iPhone OS 1.1.3 cost $19.95 for iPod Touch users.
Version history: portable iOS devices
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||iPhone OS 1
iPhone OS 2