Overview
- Apple activated the Pace and Expressivity sliders in iOS 27 developer beta 3 on Monday, July 6, letting testers pick one of five levels for each control.
- The controls live under Settings > Siri > Voice and play a continuous audio sample that updates in real time as users move the sliders and save their choice.
- Selected voice settings apply systemwide so the same pace and expressivity carry over to Apple Maps and Safari and work with different Siri voices and accents.
- The feature is still in beta and being rolled out in stages by device, language and region, with some testers reporting temporary loss of the new Siri or phone re‑indexing after updating.
- The change follows Apple’s hybrid on‑device/private‑cloud design for Siri AI and mirrors industry moves toward customizable voice assistants seen in competitors like ChatGPT.