Hi,
After Oreo update (unsure if related), noted a very red tint on screen. Suspect it is either software or sensor related - the tint "kicks in" halfway through the boot process, and certain apps (while in use) disable the tint.
It is not due to a blue light filter, nor are the color balance options under "adaptive display" adequate to counter it. Even with "red" turned all the way down and the slider all the way to "cold," it's still red-ish. Basic display is most tolerable but definitely still an issue.
I have performed a cache partition wipe and a factor reset to no avail.
I have also "squeezed" my phone (lol) based on advice from some galaxy s5 threads where users experienced this after a sensor came loose. No help.