Hello everyone, and welcome to the iOS 15.7.6 battery performance video.
iOS 15.7.6 was released May 18th 2023
This video was shot 36 hours after iOS 15.7.6 was installed, so it had some time to settle in. I have seen many comments that it takes about a week for battery performance to optimize itself after an iOS update. I have always been skeptical of this statement as I have never personally had bad battery life right after I update. If I restore and download backup from iCloud well then that is another story. So I decided to run the battery test just 36 hours after I updated them this time. In that period they were left without power, and also powered back to 100% to be
ready for the test to run.
Before the test was run the devices were set to 25% display brightness, auto brightness has been disabled, all devices use same settings, and are connected to the same access point.
How Geekbench works :
Geekbench 4 battery scores measure the battery life of a device when running…