Black wallpapers give your iPhone an elegant look. Some people prefer a black background for aesthetic reasons. Also, on an OLED screen, black wallpaper improves battery life and focus, reduces ...

LG's pricier C- and G-Series TVs can both get brighter and offer better image processing, but the B4 still has all of the contrast, black level, and viewing angle perks that OLEDs are celebrated for.

TechRadar explained it perfectly: "Imagine the whole screen entirely black, save for a single pixel out of eight million in pure, bright white – because that’s totally doable on an OLED.