Many users report that the microphone stops working during WhatsApp voice calls, voice notes, or video chats. This issue can stem from app glitches, permission settings, or device-specific audio routing problems.
Below is a quick reference that outlines common causes, quick checks, and targeted fixes to restore microphone operation on WhatsApp.
| Symptom | Likely Cause | Quick Diagnostic | First Action |
|---|---|---|---|
| No voice in WhatsApp calls | App permission muted or denied | Check mic permission for WhatsApp in Settings | Enable Microphone permission |
| Voice notes silent or very quiet | Bluetooth device active or input source wrong | Verify input source in phone settings | Switch to built-in mic or select correct device |
| 对方听不清你的声音 | Background app noise suppression or low volume | Record a short clip and playback at normal volume | Test with WhatsApp Voice Note and adjust media volume |
| Video calls have no audio | Wrong call output selected or system interruption | Check active call controls and device audio route | Tap call controls to select built-in speaker/mic |
App Permissions and System Settings
Permissions are the most frequent reason why the microphone is not working on WhatsApp. Both Android and iOS require explicit consent for apps to access the microphone, and this consent can be revoked by system updates or manual changes.
Check Android Permissions
Open Settings, Apps, WhatsApp, and tap Permissions. Ensure Microphone is set to Allow. On Android 12 and newer, you can also see whether the mic is actively in use by checking the permissions panel and recent usage section.
Check iOS Privacy Settings
Go to Settings, Privacy & Security, Microphone, and make sure WhatsApp is toggled on. If the switch is off, the system will block WhatsApp from using the microphone even if the app itself is updated.
Bluetooth Devices and Audio Routing
Bluetooth headsets, car kits, or external speakers can intercept audio routes, causing the microphone not working on WhatsApp because the device is not selected as the active input.
Disconnect or Reconnect Bluetooth
Swipe down the quick settings, tap the Bluetooth headset, and Disconnect. Reopen WhatsApp and test the microphone. Alternatively, go to Settings, Bluetooth, and select your device to toggle it off and back on.
Select the Correct Audio Route
During a WhatsApp call, use the call controls to confirm the selected input and output. On Android, you may see an arrow or route button to switch between devices. On iPhone, use the in-call UI to pick the speaker or headset you want.
Software Conflicts and Background Restrictions
Other apps, aggressive battery savers, or VPNs can interfere with WhatsApp audio services. These conflicts may prevent the microphone driver from being activated when WhatsApp needs it.
Close Conflicting Apps
Swipe away third-party launchers, security suites, or VOIP apps that might lock the audio session. Launch WhatsApp in a clean state and retry voice notes or calls.
Adjust Battery Optimization
On Android, go to Settings, Apps, WhatsApp, Battery, and set optimization to Don’t optimize or Allow background activity. On iPhone, ensure Background App Refresh is enabled for WhatsApp under Settings, General, Background App Refresh.
Reinstallation and Cache Management
If permissions and routing are correct but the microphone still fails, corrupted app data or cache may be blocking audio initialization. A controlled reset often resolves this without message loss.
Clear WhatsApp Cache
On Android, go to Settings, Apps, WhatsApp, Storage, and tap Clear Cache. On iOS, offload the app by holding its icon, then tap Off App, and reinstall from the App Store. Avoid Clear Data on Android unless you are prepared to reconfigure notifications and chats.
Reinstall WhatsApp
Uninstall WhatsApp completely, restart the device, then download the latest version from the official store. Re-verify your phone number and restore chats from your most recent backup if prompted.
Device Settings and Hardware Checks
System-level configurations, such as default input devices, volume levels, and hardware faults, also affect WhatsApp microphone behavior.
Verify Volume Levels
During a WhatsApp call, use the physical volume keys to raise the Call volume, not just media or alarm. On some devices, separate volume sliders control music and calls.
Test Microphone in Other Apps
Record a voice memo or use a third-party app like Voice Recorder to confirm the hardware mic works. If the hardware fails broadly, consider service or replacement options.
Action Checklist to Fix WhatsApp Microphone
- Verify WhatsApp has microphone permission in system settings
- Disconnect or re-pair Bluetooth headsets and check audio routing
- Clear WhatsApp cache and, if needed, reinstall the app
- Review battery optimization and background activity settings
- Test the hardware mic with a voice recorder or other app
- Adjust call volume using the dedicated call volume controls
FAQ
Reader questions
Why does the microphone work in other apps but not in WhatsApp voice calls?
WhatsApp may have been denied microphone permission, or a Bluetooth device is capturing audio. Check app permissions and disconnect external mics to test.
My voice note records but the recipient cannot hear me in calls.
p> This usually points to a muted microphone toggle within the call controls, a wrong audio route, or network-related packet loss. Switch the route and ensure network stability.
The microphone stops working after I lock the screen.
Background restrictions or battery optimization may be freezing WhatsApp audio services. Allow WhatsApp background activity and disable aggressive battery optimizations.
I updated my phone and now the microphone is broken on WhatsApp.
Permissions can be reset during updates, or the new OS version changed audio routing rules. Re-enable microphone permission and confirm the correct audio device is selected.