Why do photos taken with phones have distortion or color differences?

Due to size constraints, the camera components in phones need to be integrated into a very small space. This can lead to some distortion or color discrepancies in areas away from the center of the image. This is a common characteristic of small imaging devices.
For your reference, here is more information about the distortion or color differences in photos:
1. Some phone cameras use wide-angle lenses, which can cause distortion such as barrel or pincushion effects, especially at the edges of the photo;
2. Different lighting conditions can affect color accuracy. Artificial or mixed lighting can lead to color casts or white balance issues;
3. Automatic settings will not always be optimal for every situation, leading to variations in exposure, contrast, and color;
4. A dirty or smudged lens can affect image clarity and color accuracy;
5. If you take a photo against a light-colored background, color discrepancies or distortion in the image can be more noticeable, which is normal.