[citation][nom]digiex[/nom]13MP Cam. So many MP's but how about the picture quality. Maybe investing on a better lens with lower MP could be cheaper.[/citation]
It's not the lens that's the problem, it's the size of the image sensor. The ability to capture light and translate it to color can be directly correlated to the size of the image sensor. Bigger is better. This is why most cell phones look washed out.
I don't think people would mind a little extra bulge on the back of their phone, a nice quarter size camera/lens would be nice, instead of a little pinhole size camera.