iOS 15.7.4 was released March 27th 2023
This video was shot 48 hours after iOS 15.7.4 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 50 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 processor-intensive applications. It provides a consistent workload to…