I know there are a lot of comments so I am sorry if I am rehashing something old but have you thought about taking it to an apple location? Even though you are past the return policy, you might be able to get it swapped out. That definitely is not normal on a phone that is only a few weeks old.
It is hard to tell but from the photo you showed earlier, it looks like it might not actually be burn in, looks like possibly an over-brightness issue in that one region of the display. Could also be pixels that are stuck(Common with bad displays in general)
It is hard to tell but from the photo you showed earlier, it looks like it might not actually be burn in, looks like possibly an over-brightness issue in that one region of the display. Could also be pixels that are stuck(Common with bad displays in general)