A phone microphone can fail in several different ways.
You may have:
- no voice in calls;
- silent voice recordings;
- voice messages that record nothing;
- one app that cannot hear you;
- a microphone that works until Bluetooth connects;
- very faint or muffled audio.
The fastest way to fix it is to test the microphone first, then follow the branch that matches the result.
Test the Microphone Before Changing Settings
Open the phone’s Voice Recorder app and record a short message.
Speak normally for 10 to 15 seconds, then play it back.
Use the result to narrow the problem.
Recording sounds normal: the phone’s microphone hardware is probably working. Focus on the affected app, call service, Bluetooth routing, or permissions.
Recording is silent: check microphone access, permissions, obstruction, Safe Mode, and hardware.
Recording is very faint or muffled: inspect the microphone openings, case, dirt, moisture, and possible physical damage.
This first test is more useful than changing several settings at once.
Check System-Wide Microphone Access
Modern Android phones have a privacy control that can disable microphone access for the entire device.
Open:
Settings > Security & privacy > Privacy > Privacy controls
Look for:
Microphone access
Make sure it is turned on.
Google’s current Android guidance confirms that this control can block microphone use across apps.
You may also see a microphone privacy tile in Quick Settings.
If that is turned off, apps can have permission and still be unable to record audio.
Check the App’s Microphone Permission
If the microphone works in Voice Recorder but fails in WhatsApp, Meet, Zoom, Telegram, or another app, check that app’s permission.
Open:
Settings > Apps > [app] > Permissions > Microphone
Allow microphone access.
Google currently lets Android apps request microphone access through the normal permissions system.
Depending on the Android version, you may see options such as:
- Allow only while using the app;
- Ask every time;
- Don’t allow.
For voice and video apps, Allow only while using the app is usually appropriate.
Do not grant microphone access to apps that do not genuinely need it.
If the Microphone Works in Some Apps but Not Others
That usually means the hardware is working.
Check the affected app for:
- microphone permission;
- selected audio input;
- mute controls;
- in-app call settings;
- pending updates.
Update the app from Google Play and restart the phone.
If the app itself is freezing or crashing, clear its cache rather than resetting the whole phone.
Open:
Settings > Apps > [app] > Storage & cache > Clear cache
If you need the difference between cache and app data, see How to Clear Cache on Android Without Losing Data.
If People Cannot Hear You During Calls but Voice Recorder Works
When recordings sound normal but callers cannot hear you, the microphone hardware may not be the main problem.
Check:
- cellular signal;
- WiFi Calling;
- Bluetooth audio routing;
- Phone app updates;
- carrier service.
Make a second test call with Bluetooth turned off.
Then try:
- a normal cellular call;
- a WiFi Calling call if available;
- a WhatsApp or Meet call.
If the problem appears only on one call type, troubleshoot that service rather than the microphone hardware.
If WiFi Calling is involved, use How to Fix WiFi Calling Not Working on Android.
Turn Off Bluetooth and Test Again
Bluetooth devices can take over microphone input.
This includes:
- wireless earbuds;
- Bluetooth headphones;
- smartwatches;
- car audio systems;
- external microphones.
Turn Bluetooth off completely, then make a recording and a test call.
If the phone microphone works normally with Bluetooth disabled, the problem is likely audio routing or the accessory microphone.
If Bluetooth itself is unstable, see Bluetooth Not Working on Android.
Remove the Case and Check the Microphone Openings
A case or accessory can partially block one of the microphone openings.
Remove the case and test again.
Also inspect the microphone areas.
Common locations include:
- near the USB-C charging port;
- along the top edge;
- near the rear camera;
- around the earpiece area.
Phones often use more than one microphone.
That means one task can sound normal while another sounds poor.
For example, the microphone used for video recording may not be the same one emphasized during a normal call.
Clean the Microphone Safely
Dust, pocket lint, or debris can reduce microphone volume.
Use:
- a soft dry brush;
- a clean microfiber cloth;
- gentle air from a hand blower.
Avoid inserting:
- needles;
- pins;
- SIM eject tools;
- metal objects.
Do not push debris deeper into the opening.
I would also avoid blasting high-pressure compressed air directly into the microphone because it can damage sensitive internal components.
Check for Water or Moisture Exposure
Moisture can affect microphone performance even if the rest of the phone still works.
Possible symptoms include:
- muffled sound;
- crackling;
- intermittent recording;
- very low microphone volume;
- complete microphone failure.
If the problem started after rain, a spill, or immersion:
- Stop charging the phone if moisture may still be present.
- Remove the case.
- Let the phone dry naturally.
- Test again later.
Do not use a hair dryer or other strong heat source.
If the phone also has speaker problems, use Phone Speaker Not Working.
Restart the Phone
A temporary audio-service fault can affect microphone input.
Restart Android normally.
After the restart:
- Test Voice Recorder.
- Test a normal phone call.
- Test the app where the problem originally appeared.
If the microphone fails only after launching one specific app, that app becomes more suspicious.
Update Android and the Affected App
Install available system updates.
Open:
Settings > System > Software update
or the manufacturer equivalent.
Also update the affected app from Google Play.
Samsung’s current guidance includes restarting and software checks among its main microphone troubleshooting steps.
Updates can correct:
- audio-routing bugs;
- permission problems;
- call-service issues;
- app compatibility errors.
If several apps began malfunctioning after the same Android update, see Apps Keep Crashing After Android Update.
Test in Safe Mode
Safe Mode is useful when the microphone fails across several apps and you suspect another app is interfering.
This can happen with:
- call-recording apps;
- audio enhancers;
- privacy tools;
- accessibility apps;
- security software;
- voice-processing apps.
Safe Mode temporarily disables downloaded apps.
If the microphone works in Safe Mode, remove recently installed or updated apps one at a time.
Do not uninstall random apps in bulk.
If you have trouble leaving Safe Mode afterward, see Android Stuck in Safe Mode.
Samsung Galaxy: Run a Microphone Diagnostic
Samsung Galaxy owners can use Samsung Members diagnostics on supported phones.
Open:
Samsung Members > Support > Phone diagnostics
Look for a microphone test if your model provides it.
Samsung’s current support guidance also recommends checking for blocked microphone openings, removing the case, restarting, and testing software-related causes before repair.
A passed diagnostic does not guarantee that every app will work correctly, but it is useful evidence that the basic hardware path is functioning.
Check Whether the Problem Is Only on Speakerphone
Some phones use different microphones depending on the task.
If people hear you during a normal call but not on speakerphone, or the reverse, one microphone path may be failing.
Test:
- normal call;
- speakerphone call;
- Voice Recorder;
- front-camera video;
- rear-camera video.
Compare the recordings.
If one mode is consistently silent while others are clear, hardware diagnosis becomes more useful than repeated app resets.
Check Camera Video Audio
Record a short video with the rear camera and another with the front camera.
Play them back with the volume up.
If both videos have clear audio while calls fail, the microphone hardware is probably not completely dead.
If one camera mode has no audio while another works, the phone may be using different microphone elements.
That is useful information to give a repair technician.
Do Not Reset App Preferences as an Early Fix
Resetting all app preferences is a broad change.
It can alter:
- disabled apps;
- default apps;
- notification settings;
- background restrictions;
- permission-related behavior.
Use it only when you have evidence that Android’s app configuration is broadly corrupted.
For a microphone problem that affects one app, fix that app directly.
Do Not Factory-Reset Too Early
A factory reset should be near the end of the process.
Consider it only when:
- the microphone fails across several apps;
- there is no physical or liquid damage;
- Safe Mode does not help;
- system updates are installed;
- app permissions and system microphone access are correct;
- your data is backed up.
A factory reset will not repair a blocked, damaged, or failed microphone component.
If you need to move important data before service, see How to Transfer Data From Android to Android.
When the Microphone Is Probably a Hardware Problem
Hardware becomes more likely when:
- Voice Recorder is silent;
- calls and recordings both fail;
- Safe Mode makes no difference;
- the phone was dropped;
- liquid exposure occurred;
- one microphone mode consistently fails across multiple apps;
- cleaning and removing the case do not help;
- the problem gets worse over time.
Professional inspection is more appropriate at that point.
Avoid opening the phone yourself unless you are qualified to repair it.
