The iPhone is Apple Inc.’s mobile device which incorporates MP3 player, cellular phone, and PDA functionality into a single device. Apple launched the 3GiPhone in summer, 2008.

The iPhone uses the iPhone OS which is based on the same Mach kernel as MacOSX. However, iPhone applications must be written and compiled specifically for the iPhone. In early 2008 Apple announced the availability of the iPhone SDK designed to let developers build applications for the iPhone that share the system’s unique look and feel. This would be done primarily through Safari, Apple’s web browser. Apple currently promotes a scheme where developers wishing to distribute iPhone