Apple Intelligence: What devices and features will actually be supported?
Briefly

You'll need an iPhone 15 Pro or an M-series device with an A17 Pro processor to use Apple Intelligence features in iOS 18, while older devices like the iPhone 14 Pro with an A16 chip won't be compatible due to differences in memory and GPU capabilities.
Owners of older devices may not be able to use Apple Intelligence features, but iOS 18 will bring updates like a customizable home screen, Control Center, redesigned Photos app, text effects, and more to all iPhones.
Read at Engadget
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