I have asked this a ton of times and have never gotten a response. Why is it that no company embeds solar cells on the periphery of the screen (and/or maybe into the body of the case), as a means to generate supplemental power and extend battery life between charges. It's not like the technology doesn't exist. Heck it is used in exactly that way in modern solar watches every day (only there it is used as the battery's primary charging mechanism). It seems to me like you could squeeze a fair amount of extra use time out of a charge if you had some supplemental power helping out. That plus the device could continue to recharge on it's own when not in use, by drawing power from any light source. It seems to me like it would be an easy way to solve battery life issues in so many devices while avoiding having to install bigger batteries. How hard could it be to engineer such a system into a phone or a tablet?Do we have an electrical engineers aboard who could chime in with insight into possible issues with such an approach?