I downloaded this UI: Matte iPhone UI v1.1 by ~kediashubham on deviantART and have been looking to see how I can change the different UI images in Photoshop to make my own style UI. The most difficult part is knowing where each of the UI images are used.

Is there anywhere I can see a detailed description of where each image in the UI Images folder is used? I cannot find what I'm looking for on Google. Thanks.