I returned an 8 Plus that was poorly assembled to the point the lightning port didn’t work properly. The whole phone from display to frame was visibly crooked and was like nothing I’ve seen before or since, quality control wise from Apple.
I returned an X whose display was giving me serious eye strain. The text appeared to be twitching nonstop. That’s when I learned about pwm, pulse width modulation and its insidious effects on the nervous system of some of us sensitive to it. Edit: I forgot I returned an XS Max whose pwm rate caused a seizure migraine.
Then the year the iPhone 12 series was released I struggled to find one that was ergonomically comfortable and that had a display with a pwm rate compatible with my migraine condition. I’m not usually so indecisive once I’ve made my purchase, but that year they changed the design enough that it took me by surprise the ergonomic issues I would have with the various sizes and weights. And as always, my sensitivity to pwm often complicates my ability to adjust to a new OLED display.
I finally settled comfortably on a 12 mini and a 12 pro max. Both had defective displays showing greens in place of blacks, but I did not return them. I tolerated the issues, knowing I would trade them in eventually.
My 13 Pro had a somewhat wonky camera with focusing issues that I didn’t get addressed because the display was causing me headaches. I set it aside and used a free XR from AT&T until I was gifted an iPhone 11. I am trading the 13 Pro back to Apple today.
14 Pro Max is a keeper for me this year. I am very pleased with it so far. I’m ridiculously pleased with the deep purple color, too.