I looked at some image samples from the Nokia Pureview 808 and despite the fact that the images out of the phone are indeed composed of 41 million pixels, the actual useful number is significantly less. Darker areas, even in well-lit scenes, were harsh and noisy. When lower resolution images at higher ISO's look better and cleaner than higher resolution images at lower ISO's, the only conclusion to draw is that the extra pixels haven't earned their keep.