After seeing what the user ONoff did for the gs3 http://www.thingiverse.com/thing:27428 I decided to do the same for the galaxy s4 since there a still no accessories uploaded for it. Hopefully people can use this to create some! This mockup is based on the online dimensions (LxWxH) and the curves are based off of my phone as close as possible, I hope they're right! I have included a .ipt file (Autodesk inventor file on which I made it) as well as a .stp and the .stl If any improvements are needed please let me know!