Hi guys, I am seeking your help with a problem I am having. My iPhone 13 Pro was working perfectly, until some dust (I think) ruined the lighting port. It was on warranty so they swapped the entire back and just kept the display and the camera. After this first repair the problem was solved, but a new problem has appeared: there is an intermittent “transparent stain” of colors that go from red to yellow that appears randomly 2/3 times per day on my screen. It is similar in shape to a Dynamic island and it only lasts 2/3 seconds before disappearing. It’s very visible on the black screen. I got the phone back explaining the new problem and they changed the back again. Same problem again. I complained a bit and they agreed to fully swap my phone under warranty. Yesterday I got the new replacement phone and again I have this problem. It is not related to the iOS version because I tried every version from 16.7 to 17.1 and it still happens. At this point I find it very hard to think it is an hardware problem because statistically is almost impossible to have the same problem with a brand new phone. Could be an app? What is your suggestion? Thanks.