Had a similar issue happen back on my iPhone 5s. I was on vacation in Sri Lanka (very humid). Put the phone on the night stand to sleep. Next day a I woke up and it looked similar to yours. I could still see everything on screen, but the display looked like a TV from the 80s. I guess from the humid air it got damaged, cause it didnt get wet or got dropped before that.
GermericaGamer t1_ixr30ar wrote
Reply to Hey! Anyone saw similar issue and know how to solve it? I’m on vacation without access to any service. It’s iPhone 12. It didn’t fall or anything, it happened out of nowhere while surfing the net. by Fit_Extension_1838
Had a similar issue happen back on my iPhone 5s. I was on vacation in Sri Lanka (very humid). Put the phone on the night stand to sleep. Next day a I woke up and it looked similar to yours. I could still see everything on screen, but the display looked like a TV from the 80s. I guess from the humid air it got damaged, cause it didnt get wet or got dropped before that.