iOS 27 Beta 4 Brings Major Siri Upgrades and New Features

Apple’s iOS 27 developer beta 4 is out, and it’s shaking things up in ways many didn’t expect. The spotlight? A significant Siri overhaul, along with new voices and subtle but meaningful system tweaks that hint at what’s coming this fall.

What’s New in iOS 27 Beta 4?

Apple has rolled out iOS and iPadOS 27 developer beta 4, surprising users with more than just routine updates. Weighing in at about 5.24GB, this version requires a fair bit of free storage and is edging closer to the Release Candidate expected around early September. Apple plans to launch iOS 27 to the public alongside the next iPhone event, but for those eager to test, public beta releases are already underway.

One of the most striking changes hits you right after the initial swipe-down to Spotlight search. Now, a subtle prompt invites users to engage with Siri in a more conversational way — blending traditional search with voice assistant access seamlessly. This gentle nudge is designed to reduce confusion and enhance usability, especially for newcomers.

The New Siri Voices: More Options, More Control

Inside the Siri settings, the update uncovers a host of fresh voices — seven in total — each color-coded for easy identification. For the first time, users can customize the pace and expressivity of the sixth and seventh voices, dialing in how quickly Siri speaks and how expressive it sounds. This level of personalization promises a more natural and tailored interaction.

For example, adjusting the pace can speed up or slow down Siri’s responses noticeably, while expressivity tweaks alter the tonal quality somewhat, perhaps akin to turning a music equalizer’s treble up or down. Other accent options include South African, Irish, Indian, British, Australian, and American, though pace and expressivity customizations currently remain exclusive to American voices.

Siri’s Improved Indexing and Searching

Every beta build continues to build upon Siri’s indexing process, which now digs deeper by allowing more third-party app interaction. Apple’s indexing spreads across your device to deliver smarter and faster search results that adapt to your recent activity. This explains why new versions introduce periods of indexing after installation, with longer charging sessions actually speeding up this process.

Among smaller yet welcome refinements, the persistent display of carrier and network data in the control center keeps you instantly informed whether you’re on 5G, LTE, or even 3G. Plus, fixes to the spotlight app switcher ensure app icons no longer appear grayed out, restoring a cleaner look and better reliability.

Other System Tweaks Worth Noting

The Find My app receives a visual refresh with sleeker icons and a new splash screen explaining flexible location sharing options. Users can share their location for customized durations or pause sharing without notifying others, perfect for privacy-conscious folks.

Also, a redesigned Apple Watch app now enhances location accuracy by tapping into your watch’s GPS and cellular capabilities when away from your iPhone or iPad. The health data sharing interface has been polished with a clearer prompt asking if you want to continue sharing data with third-party apps like Withings — a minor change but one that improves transparency and user control.

Battery Drain and What to Expect Moving Forward

Beta software rarely nails battery efficiency on the first go, and this iOS 27 beta is no exception. Owners report heavy battery drain, with some needing to charge their iPhone 17 Pro multiple times a day to get through extended use. While taxing, this is often part and parcel of early beta testing, especially when devices are probed continuously for feedback and features.

Notably, Apple has also started indexing devices running the stable iOS 26.6 to get a head start on Siri improvements for those with compatible hardware, such as iPhone 15 Pro and newer. This proactive move may shorten setup times when the full iOS 27 update arrives.

There’s a lot to unpack in this release, especially for Siri enthusiasts. The fresh voices and added customization set the stage for a more conversational AI experience, while system refinements hint at Apple’s focus on seamless integration and user control. As public beta 2 for iOS 27 nears, it will be interesting to see how these changes play out for the broader user base.