On the morning of April 8, Apple released the iOS 15.4.1 system on the 31st of last month.Now Apple has closed the verification channel for the previous version, iOS 15.4.
This means that if you have already upgraded to iOS 15.4.1 or the latest iOS 15.5 beta, you will not be able to downgrade.
iOS 15.4 was launched in early March and received good reviews at the beginning because it brought the much-anticipated mask unlocking feature. But then users found that after a period of use, this version would reduce battery life.
For example, some users say that although the screen-on time of the iPhone 11 is only 2 hours, it consumes 80% of the power within 24 hours. The iPhone 13 Pro Max, which should have the strongest battery life, can only last for half a day.
According to Apple’s recommendations, users should keep the system version up to date. It is also worth mentioning that the WWDC 2022 conference has been confirmed to open on June 6, when the iOS 16 system will debut, and those who are interested can look forward to it.
Hashtag: Apple battery life iOS 15
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