You press the microphone icon, and nothing happens. No beep, no animation, the voice search remains silent. This issue affects both Android smartphones and iPhones, and its causes range from a simple disabled setting to a profound change decided by Google itself. Understanding why voice search is stopped can save time and avoid unnecessary troubleshooting.
Gemini replaces Google Assistant: the cause no one suspects
Since 2024, Google has begun replacing Google Assistant with Gemini, its new artificial intelligence. On recent Android devices, this switch can happen automatically after a system update.
The concrete result: the command “Hey Google” or “OK Google” no longer launches the usual voice assistant. It opens Gemini, which operates differently. If Gemini is not yet available in your language or region, the voice command simply seems to be cut off.
This transition is permanent on the affected devices. There is no button to revert to Google Assistant once the migration has taken place. Many users interpret this change as a malfunction, whereas it is a decision to end service on Google’s side.
To verify, explore the section detailing why voice search is stopped on your specific model. You will know if your device has switched to Gemini or if the problem lies elsewhere.
Conflict between Gemini and Google Assistant on Android
On recent versions of Android, a system setting allows you to choose which app manages voice assistance. You will generally find it in Settings, then Apps, then Default Assist App.
When Gemini is selected in this location while you expect Google Assistant, voice search may close immediately after launching. No error message appears to explain what is happening.
Check and correct the default assist app
Open your phone’s settings. Look for “Default Assist App” (the exact path varies by brand). You will see if Gemini, Google, or “None” is selected.
- If Gemini is active and you want to use it, leave this setting and familiarize yourself with its interface, which is different from Assistant’s.
- If “None” is selected, voice search is disabled at the system level. Select Google or Gemini to reactivate it.
- If Google is selected but the function does not respond, the problem likely comes from another setting (microphone, language, or update).
Microphone muted or permissions denied: the first reflex to have
Before looking for complex causes, check the microphone. On both Android and iPhone, an app can only use the microphone if you have granted it permission.
You may have denied this permission reflexively during an update. Or a “Do Not Disturb” mode has cut off access to the microphone without you noticing.
On Android
Go to Settings, then Apps, then Google. Open the Permissions section and check that the microphone is indeed allowed. If “Denied” appears, enable it.
On iPhone
Open Settings, then Privacy & Security, then Microphone. Check that the Google app (or the app you are using for voice search) has access to the microphone. On recent models, an orange dot at the top of the screen indicates that an app is using the microphone.
A physically obstructed microphone produces the same result. Dust, a poorly fitted case, or a protective film covering the microphone opening: these trivial causes are common.
Incorrect language and voice settings
Voice search depends on a precise language setting. If your phone is set to “French (Switzerland)” but the Google app expects “French (France)”, a conflict may block the function.
Huawei smartphone users have reported exactly this issue: the voice command displayed “this command is not available in my language,” while the phone was indeed set to French. The problem came from the selected regional variant.
What to check
- In the Google app settings, under Voice, check that the voice search language matches the system language.
- Remove unnecessary secondary languages that may create detection conflicts.
- If you have activated Voice Match (“Hey Google”), restart the voice recording after any language change.
Pending updates and full cache
An outdated Google app may lose access to certain voice functions. Google regularly updates voice recognition models, and an old version of the app may simply no longer work with current servers.
Check in the Play Store (Android) or the App Store (iPhone) if an update for the Google app is available. On Android, also consider updating Google Play Services, which manage many voice functions in the background.
Clearing the Google app cache often resolves persistent freezes. On Android, go to Settings, Apps, Google, Storage, then “Clear Cache.” This operation does not delete any personal data.
If the problem persists after these steps, a simple restart of the phone forces a reset of the connections between system services. This basic gesture remains the most underestimated solution to voice malfunctions.
So, the voice search that stops is not always a malfunction. Between the forced migration to Gemini, conflicts with default apps, and forgotten microphone permissions, most cases can be resolved in a few minutes in the settings. The only truly irreversible case remains the end of Google Assistant on devices already migrated to Gemini.