iOS 18: Everything we know about the next big iPhone update

Apple's next annual iOS update, iOS 18, is several months away, but it's never too early to start talking about it.Yes, rumors are already flying around about iOS 18, the theoretical follow-up to last year's iOS 17 update. I say "theoretical" because Apple has yet to publicly talk about it, but you can rest easy knowing it'll almost certainly come out at some point this year. And when it does, it may or may not be a total overhaul of the iOS experience (more on this later).Here's everything we k