The Samsung Galaxy S 4 is the world's first smartphone to receive the TCO Certification. TCO Development is an independent body that gives out awards or certifications to devices that meet their sustainability in the IT industry. TCO Development is a young group that was, I believe, created 15 years ago. In those 15 years or so, the Galaxy S 4 is the first smartphone to have received their certification.
For more information about the certification head over to TCO Development's site.
Via: TCO Development, Samsung Mobile Press
Via: TCO Development, Samsung Mobile Press