My iphone 7plus with 2017 January LG screen gives me no eye strain.
iphone 8plus with 2019 JDI screen gives me eye strain
caoyirui are you on ios 15.8?
i have ios 15.7.1 on my iphone 7 and it has no strain or only very little, it is very usable
4 days later
ocean10 yeah that's what i was implying as well, 15.7 is fine but 15.8 is known to really mess things up
My 6S with 15.8.2 is OK. But some of the 15.x updates were not OK. Its so strange how a minor update can change something like this (and possibly change it back).
13 days later
DisplaysShouldNotBeTVs The iOS on the iphone 8plus is 16 and on the iphone 7plus is 15.7. iOS version aside, for iphone 8plus, I believe the screen maker and manufacture year of the screen determine whether the screen can cause eye strain.