iPhone Clown Fish WallpaperSince we already know the resolution of the iPhone’s screen, we can start making wallpapers for it! The iPhone’s background will be able to be customized by the user, just like your OS X wallpaper. You’ll want to make it your own! Steve Jobs has his favourite wallpaper chosen already, and we can see it on the official iPhone site.

The iPhone’s screen will be measured at 3.5 inches diagonally, with a resolution of 320 pixels x 480 pixels at 180 pixels per inch (ppi). It is significant to note that computer monitor LCDs have a standard of 72 pixels per inch. The iPhone’s screen will be extremely crisp and clear in comparison, which is a good thing for a small screen which will have lots of text on it.
Here’s the famous clown fish wallpaper that will probably be packaged with every iPhone sold:

Default iPhone Wallpaper - Clown Fish

I will also add this wallpaper to the Wallpapers page, where you’ll be able to see iPhone wallpapers at the native iPhone size and resolution, as well as PC / Mac desktop wallpapers of the iPhone for use on larger screens.