OLED, because I need inky blacks and infinite contrast when sitting in my man cave watching movies on my 6" screen.
/s
OLED colors pop much more than LCD (in my opinion) but on a cell phone I don't really care. Apple doesn't implement "always on display" like every Android OLED phone does, which is one of the main benefits of OLED to me. An excellent LCD (like iPhone 8) can be far superior to a crap OLED (have had several iPhone X and Androids with crappy OLED panels). I've never had any backlight bleed on any iPhone. IPS glow, sure, because the screen can't go completely black. Again, I don't sit in a pitch black room with my phone and couldn't care less about "true black."
/s
OLED colors pop much more than LCD (in my opinion) but on a cell phone I don't really care. Apple doesn't implement "always on display" like every Android OLED phone does, which is one of the main benefits of OLED to me. An excellent LCD (like iPhone 8) can be far superior to a crap OLED (have had several iPhone X and Androids with crappy OLED panels). I've never had any backlight bleed on any iPhone. IPS glow, sure, because the screen can't go completely black. Again, I don't sit in a pitch black room with my phone and couldn't care less about "true black."