I got myself a new iPhone 13 Pro Max for Christmas and am thrilled with it! I'm very pleased with the camera in it. It does a great job and produces very sharp photos.
While I was at it, I also subscribed to the iPhone Photography School taught by Emil Pakarklis which not only teaches the operation of the iPhone camera, but it also teaches a lot of techniques for improving my photography. Great course!
I used it to take photos of some paintings that I was entering in a competition, and it reproduced the colors in the painting almost perfectly with no setting adjustments. As a test, I also took photos with my Canon t6. I carefully adjusted the white balance and did the best I could, and the colors were still not quite correct. The iPhone camera did a better job.
As I see it, the biggest advantage to using a cell phone camera is that I will have it with me all the time.
Here's a low light photo I took with it. Handheld and straight out of the camera.