Blog / 8 min read · 2026-09-16

How to Use Gemini with Siri: Setup, Shortcuts, and Practical Prompts

Learn how to use Gemini with Siri on iPhone: create a voice shortcut, start Gemini Live, handle lock-screen limits, and use practical prompts that work.

How to Use Gemini with Siri: Setup, Shortcuts, and Practical Prompts

You can use Siri to launch a Gemini workflow on an iPhone, but Siri does not become Gemini or automatically send every Siri request to Gemini. The dependable setup is: ask Siri to run a shortcut, open Gemini, then speak or paste your request in Gemini. This guide shows the setup, where the handoff stops, and prompts designed for that workflow.

What “using Gemini with Siri” actually means

Siri is the trigger; Gemini is the app that handles the AI conversation. Apple lets Siri run any shortcut saved in your collection, including shortcuts that open an app. Apple’s Shortcuts guide also notes that Siri will ask you to unlock the device if a shortcut opens an app while the phone is locked.

Google’s documented iPhone flow for Gemini Live starts inside the Gemini mobile app: open the app, tap Live or swipe left, then follow the first-time setup prompts. Gemini’s iPhone and iPad help page also says that you cannot start Gemini Live from a locked screen.

So the useful mental model is:

1. Siri hears the shortcut name.
2. The shortcut opens Gemini or starts an available Gemini action.
3. You unlock if needed.
4. Gemini receives the actual question through text or Gemini Live.

That extra handoff is not a flaw in your shortcut. It is the current boundary of the documented Siri and Gemini flows.

Set up the basic Siri-to-Gemini shortcut

Start with this version. It uses standard Shortcuts actions, so it remains useful even if Gemini’s app-specific Shortcuts actions change.

1. Install and test Gemini first

Download the Gemini app, sign in, and open it once. Google lists the installed Gemini app as a requirement for its iPhone widgets and shortcuts. Google’s widget instructions require iOS 17 or later and the downloaded Gemini app.

Then test Gemini Live directly:

1. Open Gemini.
2. Tap Live at the bottom, or swipe left.
3. Complete any on-screen setup.
4. Ask a short question and confirm that you can hear or read the response.

Do this before building a Siri shortcut. It separates a Gemini sign-in, microphone, or availability issue from a Shortcuts issue.

2. Create a shortcut that opens Gemini

1. Open Apple’s Shortcuts app.
2. Tap + to create a shortcut.
3. Tap Add Action.
4. Search for Open App.
5. Choose Gemini as the app.
6. Name the shortcut something distinct, such as Open Gemini Chat.
7. Tap Done.

Now activate Siri and say, “Open Gemini Chat.”

Choose a short name that does not sound like a common Siri command. Apple notes that when a shortcut name matches a standard Siri command, Siri runs the shortcut instead of the standard command, which can create confusing results. Apple’s guidance on running shortcuts with Siri

3. Check for a Gemini-specific action

Open the shortcut again, add an action, and search for Gemini. If your installed app exposes an action that starts a Live conversation, use that instead of Open App and give the shortcut a clear name such as Start Gemini Live.

Do not build your routine around an action that is not visible in your own Shortcuts action list. Google’s official iPhone help documents starting Live from the Gemini app, while feature availability can vary by account, app state, language, and region.

A faster option: use Siri to launch, then Gemini Live to talk

For open-ended questions, this is usually the least fussy routine:

1. Say, “Siri, Open Gemini Chat.”
2. Unlock the iPhone if prompted.
3. In Gemini, tap Live.
4. Speak normally.

Gemini Live supports a back-and-forth voice conversation, including interruptions, rather than a single dictated message. Google’s Gemini Live guide for iPhone and iPad

Once Live is active, you can put it in the background and use other apps if Gemini Live notifications are enabled. You can continue an existing Live chat after locking the phone, but Google says you must unlock the device to start one. Google’s Live background and lock-screen guidance

Build a dictation-and-paste shortcut for longer prompts

A shortcut can collect a spoken prompt, copy it, and open Gemini. It cannot reliably claim to submit that text into Gemini automatically, so keep the final paste as a deliberate step.

Create a second shortcut called Draft for Gemini:

1. Add Ask for Input and set the prompt to: What should I send to Gemini?
2. Add Copy to Clipboard.
3. Use the result of Ask for Input as the clipboard content.
4. Add Open App and select Gemini.
5. Save the shortcut.

Then say, “Siri, Draft for Gemini,” dictate your request, and paste it into Gemini after the app opens.

This is especially useful when you want to preserve exact names, dates, constraints, or a detailed image brief. Siri captures the rough instruction; Gemini receives the text you can check before sending.

Ready-to-use Siri-to-Gemini prompts

Say the shortcut name first, then use one of these prompts in Gemini Live or paste it after running Draft for Gemini.

Turn a rough idea into an actionable plan

I have 45 minutes and need to make progress on this task: [task].
Ask me only the one question that would change the plan most.
Then give me a numbered plan with the first action taking under 10 minutes.

The time limit and required first action prevent a generic productivity answer. Speak the task aloud after Gemini Live starts, or dictate it through the clipboard shortcut.

Prepare for a meeting

I am meeting with [person or team] about [topic].
Create a one-page meeting brief with:
- the goal of the meeting
- five questions worth asking
- likely objections or unknowns
- a concise closing request
Mark assumptions clearly.

For a fast voice workflow, state names slowly, then review the text before relying on it.

Turn notes into a clean message

Rewrite these notes as a clear message for [audience].
Keep the meaning, remove repetition, and use a calm direct tone.
End with one specific next step.
Notes: [paste or dictate notes]

This works well with the dictation-and-paste shortcut because it gives Gemini the exact wording you captured.

Generate an image brief through Gemini

Create an image of [subject].
Style: [style].
Composition: [camera angle and framing].
Lighting: [lighting].
Include: [important details].
Avoid: [things to exclude].
Before generating, restate the final visual brief in two sentences.

Gemini’s iPhone app supports image generation, and Google documents that you can begin a Live conversation and ask it to generate an image. Google’s iPhone image-generation instructions Siri is only starting the route into Gemini here; the image request and result remain in Gemini. For more structured prompt patterns, see this Gemini prompt engineering starter guide.

Use the Action Button instead of Siri, if you have one

On supported iPhone 15 Pro models and later, you can assign a shortcut to the Action button. Apple’s documented setup is Settings → Action Button → Shortcut → Choose a Shortcut. Apple’s Action button instructions

Assign Open Gemini Chat or your available Gemini Live shortcut. This avoids a spoken trigger, but it does not remove the need to unlock the phone before an app-opening shortcut continues.

When a widget is better than Siri

If your real goal is quick access rather than voice activation, Gemini’s widget options may be faster. Google documents Home Screen and Lock Screen options that can open Gemini, open Gemini Live, open the microphone, open the camera, or attach files and photos. Google’s Gemini widget guide

Use a Siri shortcut when you want a spoken launch command. Use a Gemini Live control or widget when you want the fewest taps after unlocking.

FAQ

Can I make Gemini my iPhone’s default Siri assistant?

The documented approach is to use Siri to run a shortcut that opens Gemini, then use Gemini for the AI conversation. It is not the same as replacing Siri with Gemini for system-wide requests.

Can Siri pass my spoken question directly into Gemini?

There is no documented, universal Siri-to-Gemini automatic prompt handoff in the setup above. Use Siri to open Gemini and speak in Gemini Live, or use the dictation-and-paste shortcut for text you want to review before submitting.

Why does Siri ask me to unlock the phone?

Apple says Siri requests an unlock when a voice-run shortcut opens an app on a locked device. Gemini separately says that Gemini Live cannot be started from the locked screen. Apple Google

Can I use a custom Gem in Gemini Live?

No. Google states that Gems can be used in Gemini’s web and mobile apps, but they cannot currently be used with Gemini Live. Google’s Gems help page

What is the best setup to start with?

Create an Open Gemini Chat shortcut, test Gemini Live manually, and add the dictation-and-paste shortcut if you often dictate detailed prompts. Add an Action Button or widget only after that basic workflow feels natural.