Siri is Apple's voice assistant — a feature built into iPhones, iPads, Macs, and Apple Watches that listens to your spoken commands and carries out tasks
You don't read Siri or turn it on in the way you would a separate app. It comes pre-installed on every Apple device and is ready to use the moment you own the device. The simplest way to start using Siri is to hold down a physical button or say a wake phrase, depending on which device you have and how you've set it up.
Siri can read your messages aloud, set reminders, play music, search the web, control your smart home devices, and perform dozens of other tasks — all by voice. It can also answer questions, do math, check the weather, and look up information. The catch is that Siri works best when you speak clearly and use straightforward requests rather than complex sentences.
Key Takeaways
- On an iPhone or iPad, hold the side button (or home button on older models) until Siri appears, then speak your request.
- On a Mac, hold Command and Space bar at the same time, or say "Hey Siri" if you've enabled that feature in settings.
- On an Apple Watch, hold the Digital Crown (the round button on the side) or say "Hey Siri" directly to your wrist.
- Siri requires an internet connection to work for most tasks, though some basic functions like setting timers work offline.
- You can customize Siri's voice, language, and whether it responds to "Hey Siri" in your device's Settings app under Siri & Search.
How to access Siri on an iPhone or iPad
On an iPhone or iPad made in 2018 or later, hold down the side button (the power button on the right edge) until you see a colorful waveform appear on your screen. This is Siri listening. Speak your request clearly — for example, "What's the weather today?" or "Set a timer for 10 minutes." Release the button when you're done speaking.
On older iPhones and iPads, hold down the home button (the circular button at the bottom) instead. The process is the same: hold, speak, release. If you have an iPhone with Face ID, you can also set up "Hey Siri" so that you can straightforward say "Hey Siri" followed by your request without pressing anything. To turn this on, go to Settings, tap Siri & Search, and toggle on "Listen for 'Hey Siri.'"
If you prefer not to use voice, you can type to Siri instead. After you've opened Siri by holding the button, tap the microphone icon at the bottom of the Siri window and type your request. This is useful in quiet environments or when you don't want to speak aloud.
How to access Siri on a Mac
On a Mac, the quickest way to open Siri is to hold Command and Space bar at the same time. A Siri window will pop up in the corner of your screen, ready to listen. Speak your request, and Siri will respond. This keyboard shortcut works on any Mac running macOS Sierra or newer.
If you've enabled "Hey Siri" on your Mac, you can also straightforward say "Hey Siri" followed by your request without using the keyboard shortcut. To turn this on, click the Apple menu, go to System Settings (or System Preferences on older Macs), find Siri, and check the box next to "Enable Ask Siri." Your Mac's microphone must be working for this to function.
Like on iPhone and iPad, you can type to Siri on a Mac if you prefer. After opening Siri, click the microphone icon and type instead of speaking. This is helpful if your Mac's microphone isn't working or if you're in a situation where speaking isn't practical.
How to access Siri on an Apple Watch
On an Apple Watch, hold down the Digital Crown — the round button on the right side of the watch — until you see the Siri interface appear on your watch face. Speak your request clearly into the watch. Siri will respond with a voice answer, a visual result, or both, depending on what you asked.
You can also say "Hey Siri" directly to your wrist if you've enabled that feature. To turn on "Hey Siri" on your Apple Watch, open the Watch app on your paired iPhone, go to Siri, and toggle on "Listen for 'Hey Siri.'" After that, you won't need to hold the Digital Crown — just say the wake phrase.
Apple Watch Siri is particularly useful for quick tasks like setting timers, checking the weather, controlling music, or sending messages while your hands are busy. Because the watch screen is small, Siri often reads answers aloud rather than displaying long text.
What Siri can and cannot do
Siri works best with straightforward, single requests. Ask "What's the weather?" and you'll get an answer. Ask "Play my workout playlist" and Siri will start the music. You can also use Siri to send messages, make calls, set reminders, create calendar events, control smart home devices, and search the web.
Siri cannot do things that require you to see and tap on the screen yourself. For example, Siri can't fill out a form, scroll through a website, or navigate a complex app menu. Siri also works best when you have an internet connection — most requests require one. Some basic functions like setting a timer, making a call, or controlling nearby smart home devices may work without internet, but web searches and most other tasks won't.
If Siri doesn't understand your request, it will ask you to repeat it or will show you search results related to what you said. Rephrasing your request in simpler terms usually helps. For instance, instead of "I need to remember to buy groceries when I pass the store," try "Remind me to buy groceries."
Customizing Siri's voice and settings
You can change how Siri sounds and behaves. On an iPhone, iPad, or Mac, go to Settings (or System Settings on Mac), find Siri & Search, and look for Voice Options. You can choose from several different voices and accents. Some devices also let you pick a male, female, or neutral voice.
In the same Siri settings area, you can turn "Hey Siri" on or off, choose whether Siri speaks responses aloud or only shows them on screen, and decide whether Siri should work from the lock screen. You can also turn off Siri entirely if you don't want to use it, though it's usually harmless to leave it on.
On an Apple Watch, open the Watch app on your iPhone, go to Siri, and you'll find similar options to customize the voice and whether "Hey Siri" is active. These settings sync across your devices, so if you change Siri's voice on your iPhone, it will change on your iPad and Mac as well.
Troubleshooting when Siri won't work
If Siri isn't responding, first check that you have an internet connection. Most Siri requests require Wi-Fi or cellular data. If you're offline, basic functions like timers and alarms may still work, but web searches and most other tasks won't.
Next, make sure Siri is actually enabled. Go to Settings, find Siri & Search, and confirm that Siri is toggled on. If you're trying to use "Hey Siri," check that it's enabled in the same menu. On some devices, "Hey Siri" requires your device to be plugged in or on a charger to work.
If your device's microphone isn't working, Siri won't hear you. Test the microphone by opening the Voice Memos app and recording a short message. If you can't hear yourself, the microphone may be blocked by dirt or a case. Clean the microphone opening gently with a dry cloth. If that doesn't help, your device may need service.
Finally, try restarting your device. Hold the power button, slide to power off, wait a few seconds, and turn it back on. This fixes many temporary glitches that prevent Siri from working.
Frequently Asked Questions
Does Siri work without Wi-Fi or cellular data?
Siri can perform some tasks offline, like setting timers, creating reminders, and controlling nearby smart home devices. However, most requests — including web searches, weather checks, and sending messages — require an internet connection. If you're offline and try to ask Siri something that needs the internet, it will tell you that it can't complete the request.
Can I use Siri in languages other than English?
Yes. Go to Settings, find Siri & Search, and tap Language. You can choose from dozens of languages and regional variations. Siri will respond in the language you select. Keep in mind that some features work better in English than in other languages, depending on your region.
Is Siri always listening, or does it only listen when I press the button?
If you have "Hey Siri" disabled, Siri only listens when you press the button or use the keyboard shortcut. If "Hey Siri" is enabled, your device listens for that phrase at all times, but it doesn't record or store what you say unless you actually say "Hey Siri." You can turn off "Hey Siri" in Settings if you prefer Siri to listen only when you set up it manually.
Why does Siri sometimes give me wrong answers?
Siri relies on understanding your words correctly and then finding the right information to answer your question. If you speak unclearly or use unusual phrasing, Siri may misunderstand. Try rephrasing your request in simpler, more common terms. If Siri consistently gives wrong answers for a particular type of question, it may be a limitation of how Siri processes that kind of request.
Can I delete Siri from my device?
No, Siri is built into Apple devices and cannot be removed. However, you can disable it by going to Settings, finding Siri & Search, and toggling Siri off. You can also turn off "Hey Siri" so that Siri only responds when you manually press the button or use the keyboard shortcut, which effectively keeps it out of your way.