Lens Module: At present, most of the lenses of mobile phones are made of glass & are composed of multiple lenses. Nicol and zeis are famous lens manufacturers with many "coatings" on the surface.

CMOS: The larger the CMOS, the larger the area of light that can be felt, and the more light the phone lens can receive, the better the imaging effect will be.

Algorithm: The software algorithm is like photoshop function for original image internally, optimizing the color, tone, contrast, noise and so on to produce the image we see.

Display: Screen material and resolution. Camera phone screen resolution directly affects the quality of the picture.