Apple announced a string of artificial intelligence (AI) updates to its operating systems in one of its most jam-packed WWDC keynotes last June. For the iPhone, Apple unveiled iOS 18, now available in public beta, the latest iteration of the smartphone software. It includes enhanced AI integrations in Siri, generative AI capabilities in Photos and Messages, and even updates to its Health and Calculator apps.
Also: iOS 18.1 beta adds photo 'Clean Up' AI tool and notification summaries – how they work
Apple removes one or two older iPhone models from its list of supported devices each time it releases a new iOS version, marking the end of those devices' software support cycle. Most of the newest AI features are reserved for the iPhone 15 Pro and newer models, as they require the processing power of an A17 Pro chipset or newer and 8GB of RAM or higher, but iOS 18 will still be available for many older models.
We've added guidance below on how to trade in your old iPhone and further specifics about iOS 18 Beta. Here's the list of supported iPhone models that can benefit from the newest operating system.