While working on my first mobile site I was informed about an app called Mobilizer. It’s a very helpful tool whenever you want to view how your site will appear on mobile phones. All you have to do is drag your index html file into the browser and it will show you how it will look on certain mobile phones.
The mobilizer app also allows you to view other sites that may have a mobile site. It’s an app only for desktop and it provides you with four different mobile phones, one being the iphone 4.
It’s a really helpful app if you’re coding for mobile web.