Safari is designed to emphasize the browsing, not the browser. The browser frame is a single pixel wide. You see a scroll bar only when needed. By default, there’s no status bar. Instead, a progress gear turns as your page loads. And if you so choose, you can hide almost the entire interface, removing virtually every distraction from the browser window. A great browser should get out of your way and let you simply enjoy the web. Safari does just that. And it does it regardless of platform.
The first browser to deliver the “real” internet to a mobile device, Safari renders pages on iPhone and iPod touch just as you see them on your computer. But this is more than just a scaled down mobile-version of the original. It takes advantage of the technologies built into these multi-touch devices. The page shifts and reformats to fill the window when you turn it on its side. You zoom in just by pinching and extending your fingers. Of course, no matter how you access it, Safari is always blazing fast and easy-to-use.
see more at http://www.apple.com/safari/what-is.html
