On my iPhone 12 I updated my phone to iOS 17.4 and now my battery life drains out even when the phone is fully charged. There are also moments where the phone will just shut down and reboot several times. The volume on the phone is also messed up. It lowers on its own making it difficult to hear calls or to watch videos.
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iOS 17.4 is not the culprit. This may help --> Prolong and Maximise Battery Performance … - Apple Community
The links I've found suggest that the reason for battery drain may not be solely due to iOS updates, but rather, it could be influenced by how an iPhone is utilized.
iOS 16
iOS 15
iOS 14
My battery drains so fast since upgraded to iOS14, mine is 7 Plus 256GB
IOS14 Health app battery drain is significant
Battery is draining fast after iOS 14
iOS 13
Re: iOS 13.1.2 Battery Drain on iPhone
Re: iOS 13.2.3 iPhone Update – Severe Battery Drain
iOS 12
iOS 12 iPhone 6s battery drain
Chellby1883 wrote:
The volume on the phone is also messed up. It lowers on its own making it difficult to hear calls or to watch videos.
This may help --> Hear No Sound or Distorted Sound Issue Po… - Apple Community
I did everything that was shown in the link but that doesn’t explain why the phone crashes numerous times back to back. The battery health of the phone is good.
Battery draining faster after iOS 17.4 update on iPhone
