iOS 15.4 Final Battery Life / Battery Drain / Battery Performance Test.
Hello everyone, and welcome to the iOS 15.4 battery performance video.
iOS 15.4 was released as expected on March 14th 2022.
Keep in mind that the iPhone 6S had a new battery installed for the All Versions Battery Test Video see link below
This video was shot 2 days iOS 15.4 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 6 days after I updated them. In those 2 days they were just idling with power connected. So let’s run the battery test again, and see if we will get some different results this time around.
Before the test was run…