Last week, Apple pushed the iOS 15.4 official version update, bringing the function of wearing a mask to use Face ID, users have upgraded, but many users have upgraded and found that the phone life is getting worse and worse, so Apple officials also came forward to give an explanation.
Some users on Twitter and Reddit say their phones' battery life has dropped faster since the iOS 15.4 upgrade. At present, many posts mention that the latest iPhone 13 model has been affected, but others have also mentioned that Apple's old mobile phones are also affected.
This doesn't seem to be a common problem, as there are other Reddit and Twitter posts claiming that iOS 15.4 improves their phone battery life.
At present, Apple's official support account @Apple Support replied to a user's post on Twitter about the matter, saying that within 48 hours of installing the new version of the operating system, the app and some mobile phone functions need to be adjusted, and it is normal for battery life to change. You can observe for a while, and then you can contact them if you still have questions.
According to the information in the official response, most of these problems are expected to be resolved in the next few days. It's unclear how common this problem is, but if you're also affected, you can keep an eye on battery usage in the coming week.