I have the same problem, just on iphone 11. The thing is, when taking pictures at night, ok, I get it, it's a lens flare, it can happen with other cameras as well. Maybe not as noticeable as on newer iphones, but still. What I was really surprised about, that it happened, and looked even worse than in a night time, in the morning taking a mirror selfie in a room with no lights on or anywhere near and no direct sunlight. And it's not the brightest room either. None of my other phones did that, not even a dslr camera in the exact same position. The lense was clean and the picture came out with green sort of stripes in various shapes and sizes. Is that also considered as a normal lens flare? We're all talking how the camera is still a great one, but can we really say it's so great when we cannot even use pictures taken in certain situations? Pictures might be sharp and great quality, but the point is that we still cannot use them because of the excessive lens flare even when there is no strong source of light.