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Test shows dark mode really can save battery life on OLED iPhones

Dark mode is a key feature on iOS 13, but can it really extend your iPhone's battery life? If it's an OLED model, the answer seems to be a firm yes, according to tests done by PhoneBuff. They used robotic devices to perform identical tasks on two iPhone XS test devices, one in light and one in dark mode. That included watching a YouTube video, using Twitter, navigating with Google Maps and chatting on the Messages app.