Apply Rounded Corners On iPhone Home Screens [ For Jailbroken iPhone Only ]
Just in case, you want to play around more with the home screen layout of the iphone, you can do it through an app released in cydia repository called RoundCorners
which allows round the corners of your iphone home screen to make the display better and more customized.
However this change is very unnoticeable still you can see, if you look at the corners of the iphone screen as shown in the image below.
This application is free and can be installed on any iphone running on iOS 4.0 or greater.