What is the halo of oppo mobile phone taking pictures at night?

I'm sorry for the inconvenience. This is one of the glare phenomena in photography. When the camera is shooting under strong light, when the light source shines on the lens of the camera, some light rays will be reflected/refracted, resulting in secondary imaging inside, thus appearing in photos/pictures. In this case, you can try to adjust the shooting angle to reduce glare. It is suggested that you can try to wipe the lens with a clean soft cloth, keep the lens clean, adjust the shooting angle and reduce glare.