The Light Phone II has a beautiful matte black and white display.
It uses a technology called "electronic paper" also commonly known as E-Ink. It was made popular by e-reader devices like the Kindle. It is characterized by its low power requirements, high visibility & contrast, and wide viewing angle. When viewing the screen, there is no back light like a traditional OLED screen you would find on a smartphone.
It's completely legible in direct sunlight, which aligns well with the Light Phone. For viewing in low light, there is a screen light that automatically illuminates the interface. The E-Ink screen has some unique characteristics to the technology itself including screen refreshes, subtle ghosting, and a different cadence than our smartphones.
A unique trait you will notice of the E-ink technology is that the screen refreshes between various states in order to fully clear the information from the previous screen. It looks like a flash as the screen inverts between colors.
NOTE: This is a representational animation, not an actual video, of an e-ink screen refresh.
Ghosting is another unique characteristic of the E-ink technology in which some information from a previous screen is subtlety visible (ghosted) behind the newly displayed information. Although slightly visible at times, and more noticeable with a black background, the ghosting does not affect the legibility.
The e-ink screen is sensitive to extreme temperatures, either hot or cold. The screen may temporarily slow down in its transition speed when too hot or cold. If exposed to direct sunlight for an extended period of time, the screen may also temporarily take a yellow hue. However, the screen should return to normal shortly thereafter.
Inverting the Background Color
If you'd prefer to change the background color of the e-ink screen so that it contrasts the physical color of the device, navigate to Settings > Preferences > Display > Invert Colors > *Tap to turn on and invert the background color*. Note that the only two options are black or gray.