The document provides an overview of the inside and outside of the iPhone system. It describes the iPhone OS architecture including the core OS layer, services layer, media layer, and Cocoa Touch layer. It also discusses the App Store model and examples of apps from CJ E&M and YES24. Issues addressed include whether Apple will open the iPhone and the future of the iPhone platform compared to Android. On the outside, it covers usability compared to other phones, the iPhone's influence on the mobile market, and opportunities for the iPhone in Korea.