Freebbble!

A better aligned version of Pixeden’s work.

iPhone 5S PSD Download is a free Mockup design resource made by Dribbble user Steffen Nørgaard Andersen. As far as I can tell, its license is Unknown.

Helpful hint: Dribbble users are nice. If the license is unknown, it is usually because they forgot to mention it explicitly; not because they were being stingy. Ask nicely and they will probably allow you to use it.