Solar Power in Cell Phone : Not a good Idea

As Apple Employees fill in the patent for integrating solar cells
into portable devices a new era is soon going to begin. It was pretty
un-expected but surely a good move as now it will make other companies to follow
the trend and create a more ecological
world. However I see some problems here:

1. I was wondering how much part of the cell phone is
   usually exposed. Probably could be 30 to 40%. Imagine your self holding the
   device and you will see your self covering most of the cell phone all the time.
2. If you expect them to run on solar
   power
   we will need to keep the cell phones in sun and if its not there , lets say in
   winter or in rainy season we are back to where we are now.

 

An alternative solution: The
Bio-Heat

I was thinking on the same line and there could be an
additional way to generate electricity and that could be our own Body heat. Not
sure if the technology
exists but if it does it would create an non stop flow of energy
if the cell can be driven by our body heat. As most of the time it is hand held
this can be effective.

What do you think about it ? Any ideas just shoot out in
comments.

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