I have a 15 Pro Max and just experienced the “overheating” for the first time. Want to know why? A news website asked me to disable my adblock to continue reading an article. I did so, and when the page reloaded my phone started to get hot. There was an auto playing video and a sticky banner bar at the bottom of the viewport, and animated ads every couple of paragraphs. Overheating stopped after I closed the tab. Hardware defect, or lesson about importance of content blockers?