The big difference between the range of devices is the display. Each pixel in the iPhone 11’s LCD display is illuminated by an LED backlight. However, when it comes to the iPhone 11 Pro’s OLED display, each pixel provides its own illumination, thanks to the different technology used to create the display. This means that often an OLED screen is crisper, has a better contrast level, and offers darker darks than an LCD one. On the other hand, LCD displays are often brighter and often have a better energy consumption than an OLED screen.