I instantly noticed the screen would slightly brighten and dim, It brightens when the screen is primarily white/blank, but if I scroll, it dims. Auto-brightness is definitely off, although it still does it even with it on. And its not overheating, as its not even warm to the touch. It also happens at every brightness level.
I tried to return it but Boost customer service blows, so I sent it to LG for a repair. They stated there was an issue with the LCD display, and replaced the phone. I just received it today and its also dimming/brightening.
My question is, if anyone here has a Stylo 4, and noticed this issue, is this just a thing these phones do? Or possibly the Oreo system? I don't understand how two separate phones now have the same problem. My Stylo 2 is three years old and I've never noticed this issue, or on any other phone prior, so any input would be appreciated.