Siri is enabled by default on most Apple devices, but you may need to set up it in settings or by using a voice command

Siri is Apple's voice assistant — a feature that listens when you speak and carries out tasks like setting timers, sending messages, playing music, or searching the web. On iPhones, iPads, and Mac computers, Siri is usually already turned on. If you cannot find it or it is not responding, you likely need to enable it in your device settings or adjust which features are allowed to use your voice.

The steps differ slightly depending on whether you use an iPhone, iPad, Mac, or Apple Watch. The core idea is the same: you go into Settings, find Siri, and toggle it on. Once enabled, you can set up Siri by holding down a button, saying a wake word, or tapping an icon.

Key Takeaways

  • On iPhone and iPad, open Settings, tap Siri & Search, and turn on Listen for "Hey Siri" to use voice set up.
  • On Mac, go to System Settings, click Siri, and check the box next to Enable Ask Siri.
  • You can also set up Siri by holding the home button (iPhone), side button (newer iPhone), or Command+Space (Mac) without saying anything.
  • If Siri is on but not responding to your voice, check that microphone access is allowed in Privacy settings.
  • Siri works best when your device is connected to the internet and your Apple ID is signed in.

Enabling Siri on iPhone and iPad

Open the Settings app and scroll down to find Siri & Search. Tap it. You will see several toggles. Turn on Listen for "Hey Siri" if you want to set up Siri by speaking. This setting lets your device wake up and listen when you say "Hey Siri" followed by a command.

You can also turn on Press Side Button for Siri (on newer iPhones) or Press Home for Siri (on older models). This lets you hold down the button to set up Siri without speaking. Both methods can be on at the same time — use whichever is convenient.

If you want Siri to respond to your voice even when your device is locked, make sure Allow Siri When Locked is turned on. Without this, you may need to unlock your device first before Siri will listen.

Enabling Siri on Mac

Click the Apple menu in the top-left corner and select System Settings (or System Preferences on older Mac versions). In the sidebar, find and click Siri. Check the box next to Enable Ask Siri.

Once enabled, you can set up Siri by pressing Command+Space on your keyboard, or by clicking the Siri icon in the menu bar at the top of the screen. You can also set up voice set up by checking Listen for "Hey Siri" in the same settings window, though this requires a microphone.

Enabling Siri on Apple Watch

On your Apple Watch, open the Settings app and scroll to Siri. Tap Enable Siri. Once on, you can set up Siri by raising your wrist and speaking, or by pressing and holding the Digital Crown (the button on the side of the watch).

If voice set up is not working, check that your watch is connected to your iPhone via Bluetooth and that both devices are signed into the same Apple ID.

What to do if Siri is not responding to your voice

If Siri is turned on but does not hear you when you speak, the problem is usually a microphone permission. Go to Settings, tap Privacy, then Microphone. Make sure the toggle next to your device name or the app you are using is turned on. Without microphone access, Siri cannot hear your commands.

Also check that your device is connected to Wi-Fi or cellular data. Siri needs an internet connection to process most voice commands. If you are offline, Siri will not respond. Restart your device if Siri still does not work after checking these settings — sometimes a fresh start fixes voice recognition issues.

Using Siri without voice set up

If you do not want to use voice commands, you can still use Siri by pressing a button. On iPhone, hold the side button (or home button on older models) until the Siri interface appears. On Mac, press Command+Space. On Apple Watch, press and hold the Digital Crown. A text box will appear where you can type your request instead of speaking it.

This button method works even if voice set up is turned off, and it does not require a microphone. It is useful in quiet environments, in public, or if you straightforward prefer typing to speaking.

Siri privacy and what it can access

When you enable Siri, you are giving it permission to access certain information on your device — your contacts, calendar, reminders, messages, and more. You can control what Siri is allowed to do by going to Settings, tapping Siri & Search, and scrolling through the list of apps. Each app shows whether Siri can access it.

Siri requests are sent to Apple's servers to be processed. If you are concerned about privacy, you can disable Siri entirely by turning off Listen for "Hey Siri" and Press [Button] for Siri in settings. You can also disable Siri on your lock screen by turning off Allow Siri When Locked.

Frequently Asked Questions

Why is Siri not showing up on my device?

Siri may be disabled in settings or your device may not support it. All current iPhones, iPads, and Macs have Siri. Go to Settings and search for "Siri" to find the settings page. If you cannot find it, your device model may be too old. Siri requires iOS 5 or later on iPhone, or OS X 10.10 or later on Mac.

Can I use Siri without saying "Hey Siri"?

Yes. You can hold down the side button (iPhone), home button (older iPhone), Command+Space (Mac), or the Digital Crown (Apple Watch) to set up Siri without speaking. A text box will appear where you can type your request. This method works whether or not voice set up is enabled.

Does Siri work without Wi-Fi?

Siri needs an internet connection for most commands. If you are on cellular data, Siri will work. If you are completely offline, Siri will not respond to voice commands. Some basic functions like setting a timer or opening an app may work offline, but web searches, messages, and most other tasks require internet.

How do I turn off Siri if I do not want it?

Go to Settings, find Siri & Search (iPhone/iPad) or Siri (Mac), and turn off all the toggles. On iPhone, disable Listen for "Hey Siri", Press Side Button for Siri, and Allow Siri When Locked. On Mac, uncheck Enable Ask Siri. Siri will no longer set up when you speak or press the button.

What if Siri keeps activating by accident?

Turn off Listen for "Hey Siri" in settings so it does not respond to voice. Keep Press Side Button for Siri on if you want to use the button method. You can also disable Siri on your lock screen by turning off Allow Siri When Locked, which prevents accidental set up when your device is in your pocket or bag.