How do I activate Siri on an iPhone for an elderly person?

Go to Settings, then Siri & Search, enable 'Listen for Hey Siri' and follow the voice setup. Then simply say 'Hey Siri' followed by your request to use the voice assistant without touching the screen.

How do I activate Ok Google on an Android phone?

Open the Google app, tap your profile picture, then Settings, then Google Assistant. Enable 'Hey Google' and register your voice. You can then talk to your phone by saying 'Ok Google'.

Siri or Google Assistant misunderstands what I say, what should I do?

Speak slowly and clearly, 20-30 cm from the phone. Reduce background noise, check that the language is set to your preferred language in the settings, and clean the phone's microphone with a dry cotton bud.

Do Siri and Google Assistant record everything I say?

No, the assistant only activates after the trigger word ('Hey Siri' or 'Ok Google'). You can view and delete your command history in the privacy settings of your phone.

What are the most useful voice commands for a senior?

The most useful are: calling a contact, sending a message, setting an alarm, asking for the weather, creating a medication reminder, opening an app, and asking for directions. All work without touching the screen.

Does voice control work without an internet connection?

Most commands require an internet connection. However, since iOS 15 and Android 12, some basic commands like calls and alarms can work offline, but voice recognition is less accurate.

Set up voice control (Siri or Google) for a senior

Talking to your phone instead of typing on the screen: it is possible, it is free, and it is already built into your smartphone. This guide explains how to activate and use voice control on iPhone (Siri) and Android (Google Assistant), along with the 10 most useful everyday commands.

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Why voice control is a game-changer for seniors

Voice control is not a gadget reserved for young people. It is an accessibility tool that can transform your daily phone use, especially if you have difficulty with the touchscreen.

The numbers in France

According to the CREDOC 2024 digital barometer, 82% of French people aged 60 to 69 own a smartphone, and 53% of those over 70. Yet, according to a CSA Research study published in March 2024, only 18% of seniors regularly use their phone’s voice assistant. The main reason cited: they do not know this feature exists or how to activate it.

An Ifop survey from January 2025 on seniors’ digital habits reveals that among those who have tried voice control, 74% find it easier than typing on the touchscreen, and 68% use it daily for at least one task.

Who benefits from it

Voice control is particularly suited if you:

Have vision difficulties that make reading the screen tiring
Suffer from arthritis or tremors that complicate touchscreen use
Find the phone keyboard too small to type a message
Want to make a call quickly without searching through your contacts
Simply prefer speaking rather than pressing buttons

Voice control does not replace the touchscreen: it complements it. You can use either one depending on the situation.

Activating Siri on iPhone (step by step)

Siri is Apple’s voice assistant, built into every iPhone since the iPhone 4S (2011). Since iOS 17 (September 2023), Apple has improved Siri’s language comprehension and response speed. Here is how to activate it.

Step 1: Open Siri settings

Tap the Settings icon (the grey gear on the home screen)
Scroll down and tap Siri & Search
You will arrive at the Siri configuration page

Step 2: Enable “Hey Siri”

Toggle the switch next to Listen for “Hey Siri” (the switch turns green)
The iPhone asks you to set up your voice
Tap Continue
Say out loud the phrases that appear on screen (there are 4 or 5)
Speak normally, as if you were talking to someone in the same room
Once finished, tap Done

From now on, simply say “Hey Siri” followed by your request and your iPhone will respond. You do not even need to touch the screen.

Step 3: Configure recommended settings

Still in Settings > Siri & Search, check these settings:

Allow Siri When Locked: enable it. This lets you talk to Siri without unlocking your phone, very handy for a quick call.
Language: check that your preferred language is selected. Tap Language to change if needed.
Siri Voice: you can choose between several male and female voices. Test them to find the one you hear best.
Voice Feedback: choose Always so Siri responds out loud in all situations.

Step 4: Test Siri

Simply say: “Hey Siri, what time is it?”

If Siri responds correctly, everything is set up. If nothing happens, check that your phone’s sound is not muted (the silent switch on the left side of the iPhone should not show an orange band).

Alternative method: the side button

If you prefer not to use “Hey Siri”, you can also activate Siri by holding the side button (the large button on the right side of the iPhone) for 2 seconds. Enable this option in Settings > Siri & Search > Press Side Button for Siri.

Activating Google Assistant on Android (step by step)

Google Assistant is the equivalent of Siri for Android phones (Samsung, Xiaomi, Oppo, etc.). It is installed by default on virtually all Android phones sold in France. According to Google (official blog, February 2025), Google Assistant understands French with a 95% accuracy rate in a quiet environment.

Step 1: Open Google Assistant settings

The method varies slightly depending on your phone brand, but here is the most common path:

Open the Google app (the icon with a coloured G)
Tap your profile picture or initials at the top right
Tap Settings
Tap Google Assistant
Tap Hey Google & Voice Match

On Samsung phones, you can also go through: Settings > Google > Google app settings > Search, Assistant & Voice > Google Assistant.

Step 2: Enable “Hey Google”

Toggle the switch next to Hey Google
Tap Next or Accept
The phone asks you to say “Hey Google” or “Ok Google” two or three times
Speak in a normal voice, about 30 cm from your phone
Once the recording is complete, tap Done

From now on, say “Ok Google” or “Hey Google” followed by your request. Both phrases work the same way.

Step 3: Recommended settings

In Google Assistant settings, check:

Languages: make sure your preferred language is first on the list
Lock screen: enable personal results on the lock screen to use the assistant without unlocking the phone
Assistant voice: you can choose from several voice tones. Pick the one you hear best.

Step 4: Test Google Assistant

Say: “Ok Google, what time is it?”

If the assistant responds, the setup is complete. If nothing happens, check that your phone volume is high enough and that the microphone is not blocked by a protective case.

The 10 most useful daily voice commands

These commands work equally well with Siri and Google Assistant. We indicate phrasings that work on both systems.

1. Call someone

Say: “Call Marie” or “Call Doctor Martin”

The assistant searches the name in your contacts and makes the call. If several contacts share the same first name, it will ask you to specify. This is the most used command among seniors according to the Ifop survey from January 2025: 89% of senior voice command users use it.

Tip: For this to work well, make sure your contacts are saved with clear names (first name + surname) in your address book.

2. Send a message

Say: “Send a message to Pierre” then dictate your message when the assistant prompts you.

You can also say the full sentence: “Send a message to Pierre, I’ll be 10 minutes late.”

The assistant reads the message back before sending it and asks for confirmation. You will not accidentally send a message.

3. Set an alarm or timer

Say: “Set an alarm for 8 o’clock tomorrow morning” or “Set a timer for 20 minutes”

This is particularly useful for remembering to take medication. You can say: “Remind me to take my medication every day at 9 o’clock.”

4. Ask for the weather

Say: “What’s the weather like today?” or “Is it going to rain tomorrow?”

The assistant gives you the local weather. You can also ask for the weather in another city: “What’s the weather like in Marseille this weekend?“

5. Create a reminder

Say: “Remind me to call the doctor on Monday at 10 o’clock” or “Remind me to buy bread when I’m at the supermarket” (this last one uses location).

Reminders appear as a notification at the scheduled time, with a sound. You no longer need to write things down on paper.

6. Dictate a message instead of typing

Say: “Write an email to Sophie Durand, subject: appointment, message: Hello Sophie, I confirm our appointment for Thursday at 2pm. Kind regards.”

The assistant composes the message and asks you to confirm before sending. For punctuation, say the words “full stop”, “comma”, “exclamation mark”, “new line” as you dictate.

7. Open an app

Say: “Open WhatsApp” or “Open the camera” or “Open Doctolib”

No more searching for the app on the home screen. Name it and it opens instantly.

8. Listen to music or radio

Say: “Play France Inter” or “Play classical music” or “Play Les Feuilles mortes”

The assistant uses the default music app (Apple Music on iPhone, YouTube Music on Android). If you have a favourite radio station, you can request it by name.

9. Get directions

Say: “How do I get to the nearest pharmacy?” or “Directions to 15 Rue de la Paix, Paris”

The assistant opens the navigation app (Maps on iPhone, Google Maps on Android) and guides you by voice. Very handy before going out to know how long the journey will take.

10. Ask a question

Say: “What is a fever?” or “How many grams are in a cup?” or “Who is the president?”

The assistant searches for the answer on the Internet and reads it aloud. It is like having an encyclopedia within earshot.

Siri or Google does not understand me: what to do?

Sometimes the voice assistant does not understand what you say. Here are the most common causes and solutions.

Speak slowly and clearly

The most common mistake is speaking too quickly or too close to the phone. Hold your phone 20-30 centimetres from your mouth (roughly the length of a school ruler) and articulate normally. There is no need to shout: the microphone is sensitive.

Reduce background noise

The television, radio or a conversation in the background disrupts voice recognition. If possible, lower the television volume or move away from the noise source before talking to your assistant. According to tests by 60 Millions de consommateurs magazine (October 2024 issue), the recognition rate drops from 95% to 72% in a noisy environment.

Check the configured language

If your assistant responds in the wrong language or does not understand anything, the language may be misconfigured:

On iPhone: Settings > Siri & Search > Language > choose your preferred language
On Android: Google app > Profile picture > Settings > Google Assistant > Languages > add your preferred language in first position

Clean your phone’s microphone

The microphone is usually located at the bottom of the phone (next to the charging port). Dust, pocket lint or a thick case can block the sound. Clean gently with a dry cotton bud or soft toothbrush. Never use water or liquid products.

Re-register your voice

If the assistant no longer reacts to the trigger word at all:

Siri: Settings > Siri & Search > toggle off then back on “Listen for Hey Siri” to redo the voice calibration
Google Assistant: Google app > Settings > Google Assistant > Hey Google & Voice Match > Re-train voice model

Check microphone permissions

Sometimes microphone permissions are disabled by mistake:

On iPhone: Settings > Privacy & Security > Microphone > check that Siri is enabled
On Android: Settings > Apps > Google > Permissions > Microphone > Allow

Privacy: what Siri and Google actually hear

The privacy question is legitimate. Here is what you need to know, factually.

What is listened to and what is not

Neither Siri nor Google Assistant listen to your conversations all the time. The phone locally analyses ambient sounds to detect only the trigger word (“Hey Siri” or “Ok Google”). According to Apple (Siri privacy white paper, updated June 2024), trigger word processing is done entirely on the device, without sending data to servers.

Once the trigger word is detected, your request is sent to servers for processing. Apple announced in June 2024 that the majority of Siri requests are now processed on-device thanks to the Neural Engine chip, without going through the Internet. Google still processes most requests on its servers, but has introduced local processing for certain basic commands since Android 12 (source: Google AI blog, October 2023).

How to delete your voice command history

On iPhone (Siri):

Go to Settings > Siri & Search > Siri & Dictation History
Tap Delete Siri & Dictation History
Confirm the deletion

On Android (Google Assistant):

Open the Google app
Tap your profile picture > Manage your Google Account
Go to the Data & privacy tab
Under “History settings”, tap Web & App Activity
Tap Manage all Web & App Activity
You can delete recordings one by one or all at once

Disabling conversation recording

If you prefer your voice commands not to be stored:

Siri: Go to Settings > Privacy & Security > Analytics & Improvements > disable “Improve Siri & Dictation”. Apple will no longer retain your voice recordings.
Google Assistant: In Manage your Google Account > Data & privacy > Web & App Activity > disable “Include audio recordings”. Your commands will still be processed but no longer stored.

According to the CNIL (recommendation of 5 September 2023 on voice assistants), users have the right to access their voice data, delete it and disable its storage. The CNIL recommends checking these settings at least once a year.

Voice control beyond the phone: smart speakers

If you enjoy voice control on your phone, you could go further with a smart speaker like the Google Nest or Amazon Echo. These devices work on the same principle (a trigger word then your request), but with a more powerful speaker and microphones that pick up your voice from across the room.

The advantage for a senior: you can ask questions, listen to the radio, make calls and control your lighting without even having your phone within reach.

We have written a full comparison of smart speakers suited for seniors in our comparisons section. You will find the simplest models to use, with their prices and respective advantages.

Summary: the essential steps

To start using voice control today:

Activate the voice assistant on your phone by following the detailed steps above (5 minutes is all it takes)
Test with a simple command: “What time is it?” to check everything works
Try the 3 commands you will use most: calling someone, asking for the weather, setting a reminder
Configure privacy according to your comfort level by following the dedicated section
If you have a problem, consult the troubleshooting section of this article

Do not try to master everything in one day. Start with one or two commands you will use every day, and add new ones gradually. Within a few weeks, talking to your phone will feel as natural as answering a call.

Editorial note

Sources consulted:

2024 digital barometer, CREDOC (published June 2024)
Ifop survey “Seniors and digital habits”, January 2025
CSA Research study on voice assistants in France, March 2024
Apple, Siri privacy white paper, updated June 2024
Google AI blog, “On-device speech recognition”, October 2023
Google, official blog, “Assistant language improvements”, February 2025
60 Millions de consommateurs, issue 608, October 2024
CNIL, recommendation on voice assistants, 5 September 2023
Apple Support documentation: “Use Siri on your iPhone” (updated for iOS 18)
Google Support documentation: “Set up Google Assistant” (updated March 2025)

Limitations of this guide:

Menus and navigation paths may vary depending on the iOS or Android version and the phone brand (Samsung, Xiaomi, Oppo have different overlays)
The voice recognition rates cited are for a quiet environment with a native French speaker; results may vary depending on regional accent
Privacy features evolve regularly; check the settings on your own device
We did not test voice control with specific speech pathologies (aphasia, dysarthria)

Verification date: 30 March 2026

Conflicts of interest: none. Neither Apple, nor Google, nor any phone manufacturer pays or sponsors Lumio for this article.

Questions fréquentes

: Go to Settings, then Siri & Search, enable 'Listen for Hey Siri' and follow the voice setup. Then simply say 'Hey Siri' followed by your request to use the voice assistant without touching the screen.
: Open the Google app, tap your profile picture, then Settings, then Google Assistant. Enable 'Hey Google' and register your voice. You can then talk to your phone by saying 'Ok Google'.
: Speak slowly and clearly, 20-30 cm from the phone. Reduce background noise, check that the language is set to your preferred language in the settings, and clean the phone's microphone with a dry cotton bud.
: No, the assistant only activates after the trigger word ('Hey Siri' or 'Ok Google'). You can view and delete your command history in the privacy settings of your phone.
: The most useful are: calling a contact, sending a message, setting an alarm, asking for the weather, creating a medication reminder, opening an app, and asking for directions. All work without touching the screen.
: Most commands require an internet connection. However, since iOS 15 and Android 12, some basic commands like calls and alarms can work offline, but voice recognition is less accurate.