The heat reduction could even lead to increased battery longevity. (xda-developers.com)
An electronic paper display shows an image even without a power source, and uses electricity only when the content on screen is changing — resulting in amazing battery longevity. (visionect.com)
Still, the lack of battery longevity from a single charge is a stick that has been used to beat the iPhone for a while. (cultofmac.com)