If you look at the technology that powers cell phones and other mobile devices, you see that the majority of phones are powered by batteries that need to be charged by connecting them to a power source. Sure, there were some experiments with solar powered phones, and phones powered by movement, but those were mostly experiments, nothing more.
The Nokia E-Cu (Cu stands for copper) however could change that perception. The concept phone is powered by heat. The cell phone makes use of an thermo generator that converts heat to energy used to power and charge the phone.
The copper based phone uses engraved heat sinks, converting heat energy into electric potential energy. It can be charged from any heat source, for instance by putting it on a radiator, in a pocket or laptop. This effectively eliminates the need for a phone charger which produce more than 51k tons of annual waste alone.
The phone’s design resembles a dry earth pattern, representing the effect that to much heat can have on the earth’s soil. You find the designer’s page at Patrick Hyland Product Design