The mobile phone is deformed greatly when taking portraits. It is necessary to observe the face of the subject from different angles. Some people are 45 degrees beautiful, while others are 30 degrees beautiful. I suggest reading this knowledge from the Internet.

If it is a big photo, the shooting angle is very particular. Everyone's face has an angle that is the most beautiful, and the requirements for lighting are also relatively high.

If it's a full-length photo, the photographer is shooting people.

In later life, taking pictures and being photographed, clothing and surrounding environment are very important, because the lens is not as good as small digital and SLR, posture and modeling, which is also the reason why photographers look for the most beautiful angle.

There's another one.

If you look carefully, for example, some people look best when shooting from the front, some people shoot from the back, and some people want to shoot from above, which may be a technical problem of the photographer.