iPhone 15 Pro Max battery lasts one extra hour thanks to iOS 18 optimizations
Apple’s 6.7-inch iPhone 15 Pro Max in Blue Titanium
Chinese blogger Geekerwan conducted a battery test on Apple’s iPhone 16 lineup as part of his coverage. The results aligned with previous findings, with the iPhone 16 Pro Max achieving a new record for battery longevity, comfortably surpassing 10 hours of usage in the test.
Interestingly, the iPhone 15 Pro Max demonstrated a notable improvement of one hour in battery life when running iOS 18 compared to its performance on iOS 17. The iPhone 15 Pro also experienced similar gains.
The Geekerwan test involves using WeChat for texting, voice and video calls, browsing the web, using Douyin (TikTok) and playing the game Genshin Impact. These activities are looped, sequentially, until the battery dies.
Under those conditions, iOS 18 helped extend the runtime of the older phones…
As to an explanation for the dramatic improvement, Geekerwan points to changes in how the iOS 18 job scheduler exploits the performance and efficiency cores of the A17 Pro chip.
In brief, it seems that iOS 18 waits longer before boosting the core frequencies of the processor. This means for shorter, burstier, tasks, the system uses less power and results in less battery drain.
MacDailyNews Take: Battery life routinely tops iPhone user wish lists, so this is an excellent development!
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