iOS 13's Dark Mode Extends OLED iPhone Battery Life, Test Confirms
When Dark Mode was marketed as a headline feature in iOS 13, Apple promoted it as an alternative new look that was easier on the eyes when viewed in dark environments. Oddly though, Apple never mentioned that it also potentially offers energy-saving benefits – particularly for OLED iPhones, since pixels on an OLED panel are individually powered and true black pixels remain inactive.
That potential battery saving has now been put to the test. In an experiment shared on YouTube,
PhoneBuff used robotic arms to interact with two fully charged iPhones running iOS 13, with one running in Dark Mode and the other in Light mode. The robots worked their way through various native and third-party apps, all of which support both iOS display modes, until the iPhones died.
The results are pretty conclusive: The test found that an iPhone XS Max using Dark Mode uses up significantly less battery than an iPhone XS Max using Light Mode. When the Light Mode-enabled iPhone XS Max died, the Dark Mode iPhone XS Max still had 30 percent battery life remaining.
PhoneBuff notes one important variable in his test that conditioned the results: The iPhones both had their displays set to 200 nits brightness. At 100 nits, which is what you'd expect indoors, two hours on Twitter saved just 5 percent more battery in Dark Mode. The same test performed at 300 nits, which is closer to outdoors use, saw Dark Mode save 12 percent battery.
Either way, the test appears to prove that Dark Mode is a significant battery saver for OLED iPhones, which include the iPhone X, iPhone XS, and iPhone 11 Pro, but not the iPhone XR or iPhone 11. You can watch the video embedded above for the full lowdown.
Popular Stories
Macworld's Filipe Espósito today revealed a handful of features that Apple is allegedly planning for iOS 26.4, iOS 27, and even iOS 28.
The report said the features are referenced within the code for a leaked internal build of iOS 26 that is not meant to be seen by the public. However, it appears that Espósito and/or his sources managed to gain access to it, providing us with a sneak peek...
Apple seeded the second iOS 26.2 Release Candidate to developers earlier this week, meaning the update will be released to the general public very soon.
Apple confirmed iOS 26.2 would be released in December, but it did not provide a specific date. We expect the update to be released by early next week.
iOS 26.2 includes a handful of new features and changes on the iPhone, such as a new...
Apple today released iOS 26.2, the second major update to the iOS 26 operating system that came out in September, iOS 26.2 comes a little over a month after iOS 26.1 launched. iOS 26.2 is compatible with the iPhone 11 series and later, as well as the second-generation iPhone SE.
The new software can be downloaded on eligible iPhones over-the-air by going to Settings >...
Apple today released new firmware designed for the AirPods Pro 3 and the prior-generation AirPods Pro 2. The AirPods Pro 3 firmware is 8B30, up from 8B25, while the AirPods Pro 2 firmware is 8B28, up from 8B21.
There's no word on what's include in the updated firmware, but the AirPods Pro 2 and AirPods Pro 3 are getting expanded support for Live Translation in the European Union in iOS...
Apple today released macOS Tahoe 26.2, the second major update to the macOS Tahoe operating system that came out in September. macOS Tahoe 26.2 comes five weeks after Apple released macOS Tahoe 26.1.
Mac users can download the macOS Tahoe update by using the Software Update section of System Settings.
macOS Tahoe 26.2 includes Edge Light, a feature that illuminates your face with soft...
The AirTag 2 will include a handful of new features that will improve tracking capabilities, according to a new report from Macworld. The site says that it was able to access an internal build of iOS 26, which includes references to multiple unreleased products.
Here's what's supposedly coming:
An improved pairing process, though no details were provided. AirTag pairing is already...
Apple today released iPadOS 26.2, the second major update to the iPadOS 26 operating system released in September. iPadOS 26.2 comes a month after iPadOS 26.1.
The new software can be downloaded on eligible iPads over-the-air by going to Settings > General > Software Update.
iPadOS 26.2 continues with the multitasking improvements that were added with iPadOS 26.1. You can now drag and...
Apple today released iOS 26.2, iPadOS 26.2, and macOS 26.2, all of which introduce new features, bug fixes, and security improvements. Apple says that the updates address over 20 vulnerabilities, including two bugs that are known to have been actively exploited.
There are a pair of WebKit vulnerabilities that could allow maliciously crafted web content to execute code or cause memory...
