Easy way to prototype iPhone screens
Needed an easy way to prototype some iPhone screens. If you use squared paper with 5mm squares you can get an original sized iPhone sketch by drawing a 10 x 15 squares wide rectangle ( 5cm x 7.5cm ). Since the sketch will have the same size as the actual screen, you can also test how easy it is to actually use the interface.
iPhone interface scribbles
If you want to transfer the wireframe from paper to the Mac, just keep in mind that each square is 32 pixels wide and high (64 pixels per centimeter in both directions).