One user expressed frustration post-update: "I updated to iOS 18 and my battery 'is dying before my eyes'." This highlights how strongly some users feel about battery issues.
User feedback included dire claims like, "God iOS 18 is absolutely killing my battery !!!!" illustrating a widespread dissatisfaction with the battery performance after the update.
According to Adrian Kingsley-Hughes, 'Installing a new OS on an iPhone triggers a lot of stuff to go on in the background, from indexing to recalibrating the battery... This can go on for hours or even days.' This suggests that initial battery drain might be temporary.
While some users complained, others reported positive experiences, stating: 'thanks to iOS 18, my battery has performed waaaaaay better :)', indicating mixed results from the update.
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