iOS (pronounced i-O.S) is the name of the operating system for Apple's mobile devices (iPhone/iPad/iPod Touch).
The current version of iOS is 4.3.5 however it is expected that iOS 5 be released some time in September/October 2011.
iOS runs a cut down version of OSX and as a result the file system looks very much the same.
There are several tools available to extract information out of iOS operating systems:
- Cellebrite UFED and Physical Analyzer
- Oxygen Forensic Suite