Here is a web link to a site that has an article that shows useful ways of using a cell 'phone to make survival tools. http://artofmanliness.com/2012/06/14/survival-cell-phone/ The site has some other interesting resources worth looking at too....soe useful, and some quirkily anachronistic. http://artofmanliness.com/2012/08/1...and-versatile-how-to-build-a-better-sawhorse/ http://artofmanliness.com/2012/06/21/wwii-field-phone-bluetooth/