I saw this article about James Barber's five-year phone. The idea is to reduce the number of phones manufactured because of the harmful aspects of manufacturing. This phone, still in concept phase, is intended to last 5 years. The nice part of this is that the camera can be swapped out as technology advances so there is a little room for improvement. 85% of it is recyclable too! Now only if Apple would get into this project....
Here are some pictures of the design: http://www.good.is/posts/james-barber-s-five-year-phone
/

This is a great idea!

I've also heard of Credo, a phone company dedicated to sustainability and progressive social change. http://www.credomobile.com/

For more information about the environmental impacts of cell phones check out this greeniacs article: http://www.greeniacs.com/GreeniacsArticles/Consumer-Pro
ducts/Cell-Phones-and-the-Environment.html