iPhone 7 overheating, black blobs on screen
Hi,
My iPhone 7 heats up and crashes internet-connected apps. It heats up just below the back camera area, so not on the side where the battery is. A few growing irregular black blobs appeared on the display over the area that heats up the most, but I don't know if it's related to the overheating or the fact that the screen is also cracked and glitching. The blobs don't show up in screenshots.
What is causing it to heat up, and are the black blobs related to the problem?