I’ve started work on a new iPhone application idea. The key to success seems to be iterating the design on paper first. Then the coding becomes simpler and better focused when you already have things mapped out. To that end I’ve made a PDF that has eight iPhone screen templates. It is A4 in size, but should be easily modified and changed for your needs in Photoshop. It has the status bar and a bounding box with tick marks on the outside to quickly mark a navigation and/or tool bar at the proper size. The template is actual size when printed.