i dont know what this update is for since im on ios26 already but somehow it made my phone smoother….
The update was for iPhone 15 and 16 lineup and fixes an issue where third party batteries could not hold a charge properly. Any other perceived change is considered placebo and potentially tied to you restarting your device for the update (which is usually the goto fix for most performance related beta issues you experience).I would assume this update fixes the error people would get trying to go to the software update page