It's no surprise that the more masterly your mobile phone is, the faster it tears through batteries. Luckily, there's the 'Second Life Mobile Phone' concept, which aims to make that issue obsolete.
Designed by Cho Sinhyung and Jeon Jungjae, the 'Second Life Mobile Phone' will have all of the capabilities you expect from a smartphone, but the sleek transparent cell will have two display modes. When high graphic quality is required, the AMOLED screen will be operating at full force; when in standby or for simpler tasks, the display will become a monochrome E-ink projection as a lighter load on your phone's juice. As the 'Second Life Mobile Phone's' battery dies, the display will gradually become as see-through as the glossy cellphone itself.