Its physical properties (its narrow bandgap, in physics parlance) mean that it sometimes releases electrons even though no light has fallen on it, resulting in a noisy image.

ECONOMIST: Camera-phones

For its part, the One X snapped some detail, but the image is hardly usable -- it's quite dark and noisy.

ENGADGET: From the lab: Lumia 920 low-light shootout with Nokia 808, iPhone 5, HTC One X and Galaxy S III