A phone that is smarter and better.
One of the biggest waste of the phone is the amount of heat that is released. To solve this problem we need to place a thermoelectric device behind the phone. The temperate different between the back of the phone and the inside of the phone will be enough to save energy that is waste in the from of heat. The energy that is gain from the heat loss will go back into the phone. This system will save a lot of energy in the long run and reduce our depend on electric power grind.