Making it easier to switch this mode select Settings-> General -> Accessibility -> Accessibility Shortcut -> Color Filters . Now, you just need to press the Home button three times to save the color mode. Press Home key 3 times to return to normal mode.
IPhone screen gray compared to normal color
In addition to turning the screen to gray, you can also reduce screen brightness, turn off the parallax feature, turn off unnecessary wireless connections, or turn off wallpaper refresh mode to help your phone battery last longer. than.
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