A so-called “pink screen” issue is affecting a small number of iPhone 13
units, with a brightly-colored display and crashes thought by Apple
support teams to be a software problem, not hardware.
An iPhone with a pink display [via Apple Support Forums user ‘Jphon’]Shortly
after the release of the iPhone 13 and iPhone 13 Pro lines in late 2021,
a small number of users encountered a frustrating situation with their
smartphones. Their iPhones would lock up and display a pink screen.