I can select different megapixel numbers for the camera on the Huawei P30.
I can select either 40MP, 10MP (Recommended), 7MP and 6MP pixels.
Should I leave the setting at 10MP or raise it to 40MP?
Depends on what you want to use the photos for. Uploading them to Instagram and Facebook is 10 MP thick. If you want to print them in poster size, or edit them later and possibly cut out parts of the image, you should use 40 MP.