Did iOS 15.4.1 Fix Your iPhone Battery Life Issues?

When Apple released iOS 15.4.1 last week to the general public, the headline fix in the “dot” update was an improvement in battery life for iPhones. It was clearly called out in the release notes and many who had updated to iOS 15.4 were pleased at the news. But that seems to be aging and fast as some users are now suggesting that the update has made battery life worse than it was in the .4 release.

Sigh. Oh Apple….

The reports from users are also backed up from sites who have done benchmark testing of the update compared to 15.4. iAppleBytes has posted a great video on their YouTube channel that highlights their findings. In their testing, they tested nine different iPhone models and the results are mixed at best.

On the iPhone 6S, iPhone 7, iPhone 8 and iPhone 12, only slight battery improvement was noted when running iOS 15.4.1. However, more disturbingly, was the reduced battery life benchmarked on the iPhone SE, iPhone XR, iPhone 11, iPhone SE and iPhone 13. In fact, the iPhone 13 dropped some 5.5% in their testing. Check out their video below for the gory details.

The problem of course is that the 15.4.1 update comes with a multitude of under-the-hood fixes including the patching of a nasty bug impacting AppleAVD. As Apple put in their support document, “an application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited.”

Ultimately users will have to decide if they can live with the battery drain versus the exploit fix in 15.4.1.

Have you seen any improvement or drop in battery life after this update? Drop a comment below and let me know.

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