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Continue to ChatIphone 6 Dark Mode / Dark Mode on the iPhone could extend your battery life 30% ... : Maybe your iphone's screen is a bit too harsh on the eyes at night, or perhaps you have a newer iphone with an oled display and whatever the difference, ios 13's dark mode is as robust as they come. - https://serjiosann.blogspot.com/2021/06/iphone-6-dark-mode-dark-mode-on-iphone.html