How to customise Siri’s voice on iPhone – steps, new iOS 27 features and hardware limits
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How to customise Siri’s voice on iPhone – steps, new iOS 27 features and hardware limits

By Android Mobiles Newsroom •13 Oct 2026 •5 min read
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Why Siri’s voice matters for Android‑leaning users

Even if you primarily use an Android handset, many UK shoppers still own an iPhone for work, photography or ecosystem reasons. Apple’s virtual assistant has long lagged behind Google Assistant in natural‑language flair, but the upcoming iOS 27 promises a more “expressive” Siri that can sound less robotic. Understanding how to modify the voice now – and what the new features will look like – helps you decide whether an upgrade or a switch to a newer iPhone makes sense for your contract.

Changing Siri’s voice on the current iOS version

If you’re on iOS 16 or iOS 17, you don’t need to wait for the September rollout. Apple hides the voice selector under the Apple Intelligence & Siri submenu:

  1. Open Settings.
  2. Tap Apple Intelligence & Siri → Voice.
  3. Browse the list of available voices, tap a preview to hear it, then confirm your choice.
  4. The device will download the new voice file – stay on Wi‑Fi or a strong cellular connection until the progress bar disappears.

The process takes only a few seconds for most voices because Apple stores the audio locally after the first download. This works on any iPhone that can run iOS 27, including the iPhone SE 2nd gen, iPhone 11 and later.

Tweaking how Siri talks – without a new OS

Beyond the voice itself, you can fine‑tune Siri’s behaviour in Settings > Accessibility > Siri. The menu groups several sliders and toggles:

These options are available on any supported iPhone, regardless of whether you install iOS 27.

What “Expressive Voice” actually is in iOS 27

Apple’s marketing calls the upcoming feature Siri Expressive Voice. In practice, it adds two sliders that affect pace and expressivity for the selected voice:

The catch? The full suite is hardware‑locked. Only devices with Apple’s latest silicon – the iPhone 17 Pro, Pro Max, iPhone 17 Air and iPads equipped with an M4 chip and at least 12 GB of RAM – can access the sliders. Older models will still see the new voice list, but the sliders remain disabled.

Beta‑only preview

If you’re enrolled in the iOS 27 public beta, the voice picker looks different: a black screen with a glowing white orb. Tapping a voice opens a drop‑down where the American and British English options expose the new sliders. Other languages currently lack these controls, meaning the expressivity tweak is limited to the two most common English dialects for UK readers.

How the new voice features compare with Google Assistant

For Android fans, it’s worth noting that Google Assistant already offers multiple voice personas and a natural‑sounding WaveNet model that adapts its tone based on context. Apple’s Expressive Voice is a step toward that flexibility, but the limited device support means many iPhone owners will still hear the same static voice set they’ve had for years.

If you’re hunting a contract deal and care about AI assistant quality, you might weigh the following:

Feature Siri (iOS 27) Google Assistant
Voice variety 5‑6 built‑in voices, Expressive sliders on newest hardware Dozens of voices, regional accents, dynamic tone
Custom speed control Speaking Rate slider (all devices) + Pace slider (new hardware) Speed is tied to the model, no manual slider
On‑screen transcription Optional via Accessibility settings Built‑in “Assistant transcript” on Android 14+
Offline capability Limited; most voices require download Basic commands work offline, but full AI needs data

Should you upgrade your iPhone for Expressive Siri?

If you already own an iPhone 17 Pro series or an M4‑based iPad, the Expressive Voice feature will be available as soon as iOS 27 ships in mid‑September. For anyone on an iPhone 13 or older, the upgrade will still bring performance improvements and new Apple Intelligence features, but the voice sliders will stay greyed out.

From a contract perspective, UK carriers typically bundle the latest iPhone models into 24‑month plans with a modest upfront cost. If a more natural‑sounding assistant is a priority, opting for the iPhone 17 Pro (or the cheaper iPhone 17 Air) could be justified. Otherwise, you can continue using the existing voice selection and the Accessibility sliders without any extra cost.

Quick checklist for UK users

Bottom line

Apple finally gives Siri a bit of personality, but the most noticeable changes are reserved for the newest flagship devices. Until then, UK iPhone owners can still swap voices and fine‑tune the assistant’s speed and response style using the built‑in settings. Whether that’s enough to sway you away from Google Assistant depends on how much you value a more expressive voice versus a broader range of free options on Android.

Source: Engadget — How to change Siri's voice (published 7 Sep 2026).
auto_awesomeCreated with AI 13 Oct 2026

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