What are the four cameras and a light on the back of the phone?

The camera can be used to take pictures, record videos, scan QR codes, recognize faces and other functions. Among them, different cameras can achieve different functions. For example, the wide-angle camera can capture a wider picture, and the telephoto camera can achieve optical zoom and other features. Lamps can be used to provide auxiliary light sources, such as fill-in light for taking photos, flashlights and other functions. With the development of artificial intelligence technology, mobile phone cameras can also implement more intelligent functions, such as intelligent scene recognition, intelligent beautification, intelligent anti-shake, etc.