Siri Expressive Voice, Apple's more natural-sounding Siri in iOS 27, will be limited to the iPhone 17 Pro, Pro Max, and Air, plus iPads with an M4 chip or newer and 12GB of RAM. Compatible users can adjust expressiveness and pace via sliders, though only American and British voices currently offer these controls. Existing iOS settings already let users change Siri's voice, speaking rate, and response style ahead of the mid-September release.
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