I belong to a camera / picture club. And lately many of my pictures have blue dots in them. I have tried many different ways, and just cant get them out..
Samsung galaxy S20
If you zoom in all the way on the moon picture, on those blue dots, you'll see its a tiny mirror image of the moon. I do not take many photos with the sun in frame, so had not noticed it then. But I had hundreds with the moon, and night sky/starscape shots, and had seen that reflection a lot. I do not think it's always been there though... like maybe an update to the system caused them to appear/reappear.