One more thing about the iPhone 13 and then I'll shut up
(probably not)
This is my first OLED+HDR iPhone; the 11 was an LCD. Photos do pop slightly more and the blacks appear slightly blacker. Maybe? I can barely tell; Apple seems quite good at calibrating their LCDs anyway.
But when held at a slight angle (20 degrees, say), the entire display gets a weird green tint. Is this because of the RGBG (i.e., two green lights per pixel) subpixel layout?