http://www.paperproto.com
Made by two guys working in advertising for a way to rapid prototype mobile UI. Above is a link to the website where you can find out more information on PAPERPROTO.
The phone is also up on shapeways in case you don't have access to a 3D printer or would like to print it in a different material.
https://www.shapeways.com/shops/paperproto
If you have any feedback for us we would love to hear it. Hit us up at paperproto@gmail.com

Print PAPERPROTO or order one from Shapeways. Print out he PDF and cut the paper out and start prototyping!
We would love to hear what people out there are using this for or any ways to improve this tool.
paperproto@gmail.com