The top sensor is a 40-megapixel "SuperSpectrum" lens, which Huawei says can take in substantially more light for sharper photos.
The second lens is a 20-megapixel wide-angle lens.
The third is an 8-megapixel telephoto lens, with 5x optical periscope zoom, and 10x hybrid zoom.
The fourth lens is located off to one side, and is a time of flight sensor to measure depth.