iPhone battery malfunctioning after update
Is it just me or the iPhone dies really quick after updating to iOS 18? Can anyone help please
There have been unconfirmed reports claiming that Apple has acknowledged a bug in iOS 18 that in some cases can cause excessive battery use, a bug that will be fixed in a future update. But again that is unconfirmed. We'll need to see how things are after the next update, expected sometime this week (also not confirmed). Meanwhile, perhaps something here will help:
If the battery in your iPhone drains too quickly - Apple Support
Regards.