Showcase Pro: Iphone Mockup
The Showcase Pro Demo has an iPhone screenshot displayed on the Showcase Home page. Here is a link to free resources that are similar:
Next, upload your iPhone picture to your Media folder on your Dashboard. Grab the image URL it generates after the upload is complete.
Go to Appearance > Widgets. In the Front Page 2 widget area, place a Text widget with the img code, like so:
Swap out the link between the quotes for your iPhone image URL. Also, notice the class “pull-right”. This class is there to give the effect of the iPhone screen overlapping the edge of the screen on certain screen sizes.