iOS 15 Siri Guide: On Device Offline Recognition and Updates

There are some major improvements to Siri in iOS 15, with Apple introducing features that iPhone users have long asked for. On devices with an A12 chip or later, ‌Siri‌ can do on-device processing and there's support for offline requests.

iOS 15 Siri Feature
This guide highlights all of the new ‌Siri‌ features that are available in iOS (and iPadOS) 15.

On-Device Speech Processing and Personalization

Starting in iOS 15, speech processing and personalization are done on-device. This makes ‌Siri‌ faster at processing requests, but also more secure. Most audio requests made of ‌Siri‌ are kept entirely on the ‌iPhone‌ and are no longer uploaded to Apple's servers for processing.

‌Siri‌'s speech recognition and understanding of commands improves as a device is used, with ‌Siri‌ learning the contacts most interacted with, new words typed, and topics preferred, with all of this information kept on device and private.

On-device speech processing and personalization is enabled through the Apple Neural Engine and it is available on iPhones and iPads that have an A12 Bionic chip or later.

On-device processing is available in German (Germany), English (Australia, Canada, India, UK, U.S.), Spanish (Spain, Mexico, U.S.), French (France), Japanese (Japan), Mandarin Chinese (China mainland), and Cantonese (Hong Kong).

Offline Support

With on-device processing now available, there are a wide range of ‌Siri‌ requests that can be handled offline. ‌Siri‌ can create (and disable) timers and alarms, launch apps, control audio playback, and access Settings options.

Apple says ‌Siri‌ can also process Messages, sharing, and Phone requests.

Sharing via Siri

When you come across something that you want to share like a photo, web page, Apple Music song, or podcast, you can ask ‌Siri‌ to send it to a friend or family member and ‌Siri‌ will do so.

siri sharing ios 15
If it's something that can't be shared, like a Messages thread, ‌Siri‌ will make a screenshot and send that. All you have to do is say "Send this to [person]" and ‌Siri‌ will confirm the request and then send it along.

siri send screenshots 1
This feature works with ‌Apple Music‌, Apple Podcasts, Apple News, Maps, web pages, photos, Messages, and more.

Improved Context Between Requests

‌Siri‌ in iOS 15 can better maintain context between voice requests. So if you ask something like "How late is the Taco Bell open?" and then "How long does it take to get there?" ‌Siri‌ will understand that "there" is the Taco Bell from the previous request.

siri contextual requests
This tends to work only when there's a single option, because in a situation with multiple Taco Bells, ‌Siri‌ needs clarification. For that reason, the contextual improvements are limited.

Contacts

‌Siri‌ also understands that if there's a contact on the screen, that's the person that you want to talk to.

So if you have the contacts app open to a specific person, are chatting with someone in Messages, get a Message notification, or miss a call, you can say something like "Message them I'm on my way" and ‌Siri‌ will know to send it to the relevant contact that you've just interacted with or have open.

ios 15 contextual messaging

HomeKit Improvements

‌Siri‌ can now be used to control a HomeKit device at a specific time. So if you want your lights to turn off right when at 7, you can say something like "Hey ‌Siri‌, turn off the bedroom lights at 7.p.m." This command also works for geolocation, so you can say things like "Hey ‌Siri‌, turn off the air conditioning when I leave."

siri ios 15 timed homekit commands
When you ask ‌Siri‌ to control a ‌HomeKit‌ product this way, it creates an automation in the Home app under the "Automation" section. If you want to delete an Automation ‌Siri‌ has created, you can do so in the Home app.

‌HomeKit‌ developers can also add ‌Siri‌ support to their products in iOS 15, but using ‌Siri‌ commands with third-party devices does require the user to have a HomePod to route requests through. With ‌Siri‌ integration, customers will be able to use their ‌HomeKit‌ products for ‌Siri‌ commands like setting reminders, controlling devices, broadcasting messages, and more.

Announce Notifications

‌Siri‌ has been able to announce calls and incoming messages when using AirPods (or Beats headphones) for some time now, but in iOS 15, that feature is expanding to all notifications.

siri announce notifications ios 15
‌Siri‌ can automatically announce Time Sensitive notifications when AirPods are connected if you toggle the feature on in the Settings app (in either the ‌Siri‌ or Notifications sections), and there are also options to have ‌Siri‌ announce notifications on an app-by-app basis if you want to hear notifications from a particular app but those notifications aren't Time Sensitive.

Announce Messages in CarPlay

There's now a feature to have ‌Siri‌ announce your incoming messages when your ‌iPhone‌ is connected to a CarPlay setup.

There's an option to turn announcements on or off when a message is read, and ‌Siri‌ will remember your preference. This feature can also be toggled on or off using the Settings app.

Announce Reminders With AirPods

In addition to notifications, ‌Siri‌ can also announced reminders that come up when wearing AirPods or compatible Beats headphones.

siri announce reminders ios 15

Add Siri Suggestions to Safari Start Page

With Start Page customization in iOS 15, there is an option to add a section for ‌Siri‌ Suggestions for websites you might want to visit or content you might want to view.

Language Improvements

Neural text-to-speech voices have expanded to Swedish, Danish, Norwegian, and Finnish in iOS 15.

Apple has also added mixed English and Indic language support. ‌Siri‌ can process commands in a mix of Indian English and native languages, with support for Hindi, Telugu, Kannada, Marathi, Tamil, Bengali, Gujarati, Malayalam, and Punjabi.

Siri for Developers

Apple is tweaking its SiriKit interface and is eliminating some of the ‌Siri‌ commands that developers were able to use with third-party apps.

Starting with iOS 15, customers will no longer be able to use ‌Siri‌ in third-party apps to do things like book a ride with Uber, make a bill payment, or create new task lists in to-do apps. Many of these ‌Siri‌ functions may be replaced by Shortcut options that can be activated with ‌Siri‌ voice commands.

Guide Feedback

Have questions about ‌Siri‌ in iOS 15, know of a feature we left out, or want to offer feedback on this guide? Send us an email here.

Related Forum: iOS 15

Popular Stories

Apple Logo Top Half

Early iOS 26 Software Leak Uncovers Dozens of Upcoming Apple Features

Monday December 15, 2025 3:05 pm PST by
Software from an iPhone prototype running an early build of iOS 26 leaked last week, giving us a glimpse at future Apple devices and iOS features. We recapped device codenames in our prior article, and now we have a list of some of the most notable feature flags that were found in the software code. In some cases, it's obvious what the feature flags are referring to, while some are more...
apple beta 26 lineup

Apple Leak Confirms Work on Foldable iPhone, AirTag 2, and Dozens More Devices

Monday December 15, 2025 2:05 pm PST by
Last week, details about unreleased Apple devices and future iOS features were shared by Macworld. This week, we learned where the information came from, plus we have more findings from the leak. As it turns out, an Apple prototype device running an early build of iOS 26 was sold, and the person who bought it shared the software. The OS has a version number of 23A5234w, and the first...
iPhone Top Left Hole Punch Face ID Feature Purple

iPhone 18 Pro Features Leaked in New Report, Including Under-Screen Face ID

Tuesday December 16, 2025 8:44 am PST by
Next year's iPhone 18 Pro and iPhone 18 Pro Max will be equipped with under-screen Face ID, and the front camera will be moved to the top-left corner of the screen, according to a new report from The Information's Wayne Ma and Qianer Liu. As a result of these changes, the report said the iPhone 18 Pro models will not have a pill-shaped Dynamic Island cutout at the top of the screen....
iOS 26

iOS 26.3 Beta 1 Features: What's New So Far

Monday December 15, 2025 4:23 pm PST by
Apple is testing iOS 26.3, the next version of iOS 26 that will launch around January. Since iOS 26.3's testing is happening over the holidays, it is a smaller update with fewer features than we've seen in prior betas. We've rounded up what's new so far, and we'll add to our list with subsequent betas if we come across any other features. Transfer to Android Apple is making it simpler...
Apple Foldable Thumb

Leak Reveals Foldable iPhone Details

Monday December 15, 2025 9:09 am PST by
The first foldable iPhone will feature a series of design and hardware firsts for Apple, according to details shared by the Weibo leaker known as Digital Chat Station. According to a new post, via machine translation, Apple is developing what the leaker describes as a "wide foldable" device, a term used to refer to a horizontally oriented, book-style foldable with a large internal display....
iOS 26

iOS 26.4 and iOS 27 Features Revealed in New Leak

Friday December 12, 2025 10:56 am PST by
Macworld's Filipe Espósito today revealed a handful of features that Apple is allegedly planning for iOS 26.4, iOS 27, and even iOS 28. The report said the features are referenced within the code for a leaked internal build of iOS 26 that is not meant to be seen by the public. However, it appears that Espósito and/or his sources managed to gain access to it, providing us with a sneak peek...
apple iphone air battery pack

Apple Aims to Boost Popularity of iPhone Air 2 in Two Ways

Tuesday December 16, 2025 11:06 am PST by
We have been covering iPhone 18 Pro, iPhone 17e, and iPhone Fold details from The Information's report about future iPhone models, and next up is the iPhone Air 2. The report says that Apple aims to make the iPhone Air 2 more attractive in two ways. First, Apple is apparently considering adding a second rear camera to the device, which would resolve a key limitation. The current iPhone...
airpods max 2024 colors

AirPods Max 2 Likely to Offer These 10 New Features

Monday December 15, 2025 7:41 am PST by
Apple released the AirPods Max on December 15, 2020, meaning the over-ear headphones launched five years ago today. While the AirPods Max were updated with a USB-C port and new color options last year, followed by support for lossless audio and ultra-low latency audio this year, the headphones lack some of the features that have been introduced for newer generations of the regular AirPods and the ...
maxresdefault

Apple Developing iMac Pro With M5 Max Chip

Tuesday December 16, 2025 7:30 am PST by
Apple is developing a high-end iMac featuring the M5 Max chip, according to information from leaked internal software. Subscribe to the MacRumors YouTube channel for more videos. The finding comes from leaked kernel debug kit files used by Apple engineers. These kernel debug kit files enumerate unreleased Apple hardware by internal identifiers, such as codenames and platform names, and they...

Top Rated Comments

murdoc2k Avatar
57 months ago

The other day I happened to watch the keynote when it was introduced back then.


It was actually really fun and surprising to watch, to see all it was able to do back then already, and how it... hasn't really evolved in a decade.
Wow, I think you're right. In fact, it's dumber than the original version of Siri.

I think they took out the wolfram alpha api. In the demo, Scott mentioned that you can ask it how many days until your birthday and when I tried that just now, it only tells me when my birthday is but not the number of days until my birthday.
Score: 15 Votes (Like | Disagree)
dhla Avatar
57 months ago
There's one suggestion I have made before and would love to see - seems easy. If I'm sending a text via Siri to a contact, and I mention that persons name in the text, it would be great if Siri relied on the spelling of the name from the contact. For example, if I'm texting someone named "Erik" and I want to text (via Siri), "Hey Erik, did you see that reveal on last night's show?"... Siri will spell out the text as "Hey Eric, did you see that reveal on last night's show?" Would be great since in this example I'm texting a contact named "Erik" if Siri had the logic to take the spelling from the contact.
Score: 15 Votes (Like | Disagree)
PsykX Avatar
57 months ago

For better or for worse, it will be a decade this year since Siri first launched on the iPhone.
The other day I happened to watch the keynote when it was introduced back then.


It was actually really fun and surprising to watch, to see all it was able to do back then already, and how it... hasn't really evolved in a decade.
Score: 15 Votes (Like | Disagree)
poematik13 Avatar
57 months ago
The weakest product/service in apples lineup by far.
Score: 12 Votes (Like | Disagree)
DaPizzaMan Avatar
57 months ago
Honestly, this is one of the most exciting features in iOS 15. Offline Siri, improved context, and especially the "announce notifications" feature.
Score: 8 Votes (Like | Disagree)
contacos Avatar
57 months ago
Useless for me since Siri is still not able to handle more than one language at a time. You should hear my incoming messages in Spanish or English when my iPhone is set to German. It’s hilarious
Score: 6 Votes (Like | Disagree)