On April 1, Apple officially pushed the iOS 15.4.1 system to the iPhone, and the logs showed that the most important content of this update is to optimize the battery life. In September last year, Apple officially released iOS 15, after the new machine was put on sale, many netizens praised that the battery of the iPhone 13/13 mini/13 Pro was not much bigger, but the battery life was much stronger.

From the beginning of iOS 15.1, there are users who complain that the iPhone battery life has declined, and to iOS 15.2, this sound is more and more. As far as Xiao Lei's own experience is concerned, after the iPhone 13 mini is updated to iOS 15.2, it can indeed obviously feel that the battery life has dropped a lot.
In the subsequent version of the update, Xiao Lei has always thought that Apple will fix the problem of reduced battery life, and apple has disappointed us again and again. Before iOS 15.4 was launched, a major version update, but still did not solve the battery life problem. Of course, Xiao Lei is still very satisfied with this update, because the version adds the function of wearing a mask to unlock, and when playing mobile phones on the subway, you do not have to enter the password frequently.
Now that iOS 15.4.1 is online, Apple has finally optimized the battery life. To be honest, before using the iPhone, Xiao Lei has not believed that the iPhone with a 2000mAh battery can catch up with the 3500mAh Android phone until he has used it, and he knows that Apple's battery life optimization is not blown.
But still that problem, the iPhone's battery is relatively small, generally only the Pro Max version will be larger. Once there is something wrong with system scheduling and optimization, the battery life of the iPhone will be significantly reduced. Of course, Apple's mobile phone currently only supports 120Hz on the iPhone 13 Pro/Pro Max, plus the A15 bionic processor itself has excellent battery life, so the iPhone endurance performance is OK.
Android flagship is generally equipped with 2K 120Hz screen, the battery life is indeed much worse than the iPhone, but there are 65W ~ 150W fast charge blessing, the overall performance is OK, iPhone currently only supports 29W fast charging, so it is necessary to focus on optimizing the endurance. As for how much the battery life of iOS 15.4.1 is improved, Xiao Lei still has to experience it to know.