Apologies for the late reply.
I had the Iphone X and had seen this thread on the forum and thought everyone was being OTT and making the headaches up.
I bought the Iphone 12pro thinking I wasnt effected as I obviously was fine with the OLED Iphone X.
It started with headache/migraine behind my left right eye immediately after getting it, but it clashed with working from home with Covid in a particular room in my house with a big bay window. I was sat looking out of the window so looking at my monitor and having lots of sunlight making it contrasty. I did some reading up and moved things around but no help.
It wasn't until I remembered this thread, had a read and saw that people were experiencing differences with different OLED screens. My works phone was an iphone 8 so swapped to that for and found immediate relief, unfortunately it took 4 weeks of using the 12pro and the damage was done.
On the 5th week my right eye drooped and watered (it went half closed) one of the main syptoms of my condition.
The pain left my eye and sat on the top right of my head, pound coin size. Good days feel like sunburn and bad days feels like a hot poker being pushed into my brain.
Not sure which part of the world you are from but with Covid and the reluctance of NHS in the UK to refer outside of their region.... (York where I live has a neurology department with a 13month wait, and even then I know they arent qualified as none of them are headache specialists. However I would have had to wait 13months to have my appointment and then get referred to Leeds/Hull)
I paid for private at Hull and the headache neurologist then reffered me into his NHS practice (basically a £300 shortcut). I am in good hands now.
I keep busy at work and the pain goes fairly unnoticed with my medication. Its when I chill on a night that I feel it.
Hope you get sorted with your pain, maybe getting seen by someone might help if its effecting your day to day life.
If you are in the UK this site is great
Ouch, Raising general awareness of cluster headache and offering support and guidance through our helpline and user forum
ouchuk.org
They can advise you of the headache neurologists in the country (they specialise in Cluster Headaches which is an awful condition)