Today's headline, the latest version of IOS 7.9.5 has dark mode. I downloaded the new version of today's headline, and found no dark mode, but there is a night mode to set. The previous old version of today's headlines has a dark mode. The option of dark mode cannot be found in it. It seems that the old version of today's headlines has a dark mode.

The direct effect of dark mode

The dark mode can save the power of the organic light emitting diode (OLED) display. From the point of view of battery power, Diablo mode is actually the best Yu mode on devices equipped with OLED display. This is caused by the way the OLED screen works.

On the OLED display screen, when a pixel is pure black (no deviation at all), the pixel will be turned off without consuming energy. At this time, if the display screen displays a large area of black pixels, the power consumption of the display screen will be greatly reduced.