| Version of the iOS operating system | |
 | |
 iPhone OS 1 running on an original iPhone | |
| Developer | Apple Inc. |
|---|---|
| Source model | Closed, with open source components |
| Initial release | June 29, 2007 |
| Latest release | 1.1.5 (4B1) / July 15, 2008 |
| Update method | iTunes |
| Platforms | iPhone (1st generation) iPod Touch (1st generation) |
| Kernel type | Hybrid (XNU) |
| License | Proprietary software |
| Succeeded by | iPhone OS 2 |
| Official website | Apple - iPhone at the Wayback Machine (archived June 7, 2007(Date mismatch)) |
| Support status | |
| Obsolete, unsupported | |
iPhone OS 1 is the first major release of iOS, Apple's mobile operating system. It was succeeded by iPhone OS 2 on July 11, 2008.