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2. Apple. The company that will always be associated with Steve Jobs holds the distinction of being one of the first tech companies to produce products that are free of PVC [polyvinyl chloride plastic] and BFR [bominated frame retardant].

The world's greenest smartphone makers

To mark Earth Day 2013, we take a look at the top seven smartphone manufacturers that have scored high "in terms of sustainability, greenhouse gas emissions, recycling and use

of precious earth minerals, as well as on issues such as a product's energy efficiency." The list is culled from Greenpeace's Guide to Greener Electronics. (Compiled by Alora Uy Guerrero)

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