Huawei myTouch Camera Rates 3.9MP, Not 5MP

They probably didn't even think about the aspect ratio when rating the camera - OR, the actual camera mechanism itself IS capable of 5 MP, but the software limitation that forces shots into that aspect ratio limit resolution, and therefor the number o...
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I'm betting they used a 5MP sensor which usually has a 4:3 aspect ratio, coupled with software that takes 16:9 pictures. Result: ~4MP photos.