Activate Siri with Your Voice

Whether you’re in the car or your iPhone is halfway across the room, sometimes it’s not practical (or safe) to lay hands on your device just so you can talk to it. Most newer Apple devices, including all Apple Watches and HomePods, make it easy to get your digital assistant’s attention by calling out “Hey Siri!” To find out if your device supports voice activation, see Which iPhones and iPads Recognize “Hey Siri”? Apple TV does not support voice activation, but new Macs do.

Use “Hey Siri” on Your iPhone or iPad

To enable “Hey Siri” on your iOS device or iPad, tap Settings > Siri & Search and slide the “Listen for ‘Hey Siri’” button to on. The first time you do this, you’re asked to train Siri to recognize your voice (Figure 13). Tap Continue and follow the prompts to do so.

Figure 13: Train your mobile device to pick your voice—and only your voice—out of the crowd.
Figure 13: Train your mobile device to pick your voice—and only your voice—out of the crowd.

Next, tap Settings > Siri & Search and set Allow Siri When Locked to on (Figure 14).

Figure 14: Adjust a few of your mobile device’s settings to make it possible to hail Siri with your voice. (iPhone X shown here.)
Figure 14: Adjust a few of your mobile device’s settings to make it possible to hail Siri with your voice. (iPhone X shown here.)

You must leave the Allow Siri When Locked setting on to trigger “Hey Siri” when you’re not actively using your mobile device. (This setting is also required for a new feature that lets Siri Announce Incoming Messages on AirPods (and More).) See Should You Enable Siri from the Lock Screen? for a discussion of how to handle the security tradeoffs that come with doing this.

Once you’re set up, just say “Hey Siri” followed immediately by your question or request and your device snaps to attention. If you can’t get your mobile device to listen, make sure it’s face up, its case is open, and that it isn’t in Low Power Mode. If it’s an older device, it might need to be plugged in. See the next sidebar.

Use “Hey Siri” on Your Apple Watch

If you want to be able to activate Siri by voice on your watch, go to Settings > Siri and slide the Hey Siri button to on. Note that you’ll need to wake up your watch by tapping or raising it before you make your request.

If you have an Apple Watch series 3 or later, you’ll see another setting here—“Raise to Speak” (Figure 15). This feature lets you skip the “Hey Siri” passphrase and just raise your watch and start talking.

Figure 15: The Apple Watch (series 3 or later) gives you two options for activating Siri without having to press and hold the Digital Crown.
Figure 15: The Apple Watch (series 3 or later) gives you two options for activating Siri without having to press and hold the Digital Crown.

I’ve found this feature to be much more finicky than the “Hey Siri” trigger phrase, however, and usually have to bring the watch right next to my mouth before it activates. If you want to be able to trigger Siri by voice with your watch, I’d recommend using “Hey Siri” instead.

Use “Hey Siri” on Your HomePod

Voice activation is on by default for your HomePod and is the primary way you’re meant to interact with the device (hence the lack of buttons). No additional set up is required. As of iOS 13.2, you can even train Siri to recognize different family members’ voices. (See Teach HomePod to Recognize Different Voices.)

Turn voice activation off by saying “Hey Siri, turn off Hey Siri.” Siri warns you that you need to activate the HomePod manually from now on. (See Trigger Siri by Touch on HomePod.) This might come in handy when you’re having a party, for instance, and want to make it a little harder for guests to hijack the playlist.

Alternatively, you can use the Home app to adjust the setting. On your iPad or iOS device, touch and hold the device name and then tap the Settings icon. Scroll down and slide the “Listen for ‘Hey Siri’” setting to off (Figure 16). On a Mac, Control- or right-click on the device in the Home app, select Settings, and then toggle the “Listen for ‘Hey Siri’” setting to off. (Turn it back on from here, too.)

Figure 16: Voice activation is on by default for the HomePod. Turn it off or make adjustments to other Siri settings in the Home app on your iPad or iOS device (shown here) or Mac.
Figure 16: Voice activation is on by default for the HomePod. Turn it off or make adjustments to other Siri settings in the Home app on your iPad or iOS device (shown here) or Mac.

You can also tweak how Siri on your HomePod responds to you here by sliding the “Light When Using Siri” and the “Sound When Using Siri” settings on or off, depending on what kind of feedback you want your HomePod to give you when Siri has heard the “Hey Siri” trigger. The feedback sound—off by default—can be helpful if your HomePod sits on a shelf above eye level or you often activate it from across the room.

Use “Hey Siri” On Your Mac

It’s obvious why it’s convenient to hail Siri with your voice when your iPhone is on the passenger’s seat or your HomePod is across the room. In those situations, you can’t easily touch the device. It’s different with our Macs. Most of us work on them for hours—fingers on the keyboard—with many ways to trigger Siri right at hand. (See Trigger Siri Manually on a Mac.)

Still, new Macs now typically support “Hey Siri” too, including MacBook Pros and MacBook Airs introduced in 2018 or later, iMac Pros, and the iMac introduced in 2020.

On supported Macs, go to System Preferences > Siri and select the “Listen for ‘Hey Siri’” option (Figure 17) to activate this feature.

Figure 17: If you have a Mac that supports Siri voice activation (MacBook Air shown here), an option to enable “Hey Siri” appears in System Preferences (boxed).
Figure 17: If you have a Mac that supports Siri voice activation (MacBook Air shown here), an option to enable “Hey Siri” appears in System Preferences (boxed).

You can also select the “Allow Siri when locked” option if you want to be able to trigger Siri when your Mac is locked or asleep. This might be useful for iMac Pro users who don’t carry their computer around and may use their Mac to play music when they’re not working at it. MacBook users will probably find it less convenient to walk over to their computer, open its cover, and say “Hey Siri” than to use Siri with a nearby iPhone or iPad. Using the hands-free command may still be useful when your Mac is unlocked, though, for multi-tasking.

Use “Hey Siri” with AirPods

If you use AirPods with your Mac and other Apple devices, you can trigger “Hey Siri” through them. This is particularly convenient if your Mac itself doesn’t support “Hey Siri.”

On your Mac, go to System Preferences > Siri and select the “Listen for ‘Hey Siri’ on AirPods” checkbox (Figure 18). This option appears only if you’ve paired AirPods with your Mac.

Figure 18: If you use AirPods with your Mac, access “Hey Siri” through them—even if the Mac itself doesn’t support the feature.
Figure 18: If you use AirPods with your Mac, access “Hey Siri” through them—even if the Mac itself doesn’t support the feature.

As soon as you select this option, the “Allow Siri when locked” option appears. Select this if you want to be able to activate “Hey Siri” when you’re not actively using your Mac. (If the Mac is a laptop, its lid must be open, too.)

Now, with your AirPods in your ears, say “Hey Siri” and speak your command.