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Microphone Not Working? How to Fix Mic on Windows, Mac, and Phone

4 min read •
Beginner Microphone Audio Fix Zoom

You join a Zoom call and nobody can hear you. Or your voice recording app shows no input. Your microphone is not working — but is it the mic, the settings, or the app?

Quick Checks

  1. Is the mic muted? Check the physical mute button on your headset AND the mute button in the app
  2. Correct mic selected? Your computer might be using the wrong microphone (webcam mic vs headset vs built-in)
  3. Permission granted? Apps need explicit permission to use your microphone

Windows Fixes

Fix 1: Check Microphone Privacy

Settings → Privacy & Security → Microphone → make sure:

  • "Microphone access" is ON
  • "Let apps access your microphone" is ON
  • The specific app (Zoom, Chrome, Discord) is toggled ON

Fix 2: Check Input Device

  1. Right-click the speaker icon in taskbar → Sound settings
  2. Under "Input" → select the correct microphone
  3. Speak — the volume bar should move. If it does not, the mic is not working

Fix 3: Test in Sound Settings

  1. Settings → Sound → scroll to Input
  2. Click your microphone → Test
  3. Speak and check if the bar moves

Fix 4: Run Audio Troubleshooter

Settings → System → Troubleshoot → Other troubleshooters → Recording Audio → Run

Fix 5: Update Audio Driver

Device Manager → Audio inputs and outputs → right-click your microphone → Update driver

Fix 6: Check Volume Level

  1. Right-click speaker icon → Sound settings → More sound settings
  2. Recording tab → right-click your mic → Properties
  3. Levels tab → make sure the volume is at 80-100% and NOT muted
  4. Advanced tab → uncheck "Allow applications to take exclusive control"

Fix 7: Disable Audio Enhancements

Same Properties window → Advanced tab → uncheck "Enable audio enhancements"

Mac Fixes

Fix 1: Check Input Device

System Settings → Sound → Input → select the correct microphone. Speak — the level meter should move.

Fix 2: Check App Permissions

System Settings → Privacy & Security → Microphone → make sure the app is checked

Fix 3: Reset Core Audio

sudo killall coreaudiod

Fix 4: Reset NVRAM

Shut down → power on → hold Option + Command + P + R for 20 seconds

iPhone

Fix 1: Check App Permission

Settings → Privacy & Security → Microphone → make sure the app has permission

Fix 2: Test Built-in Mic

Open Voice Memos → record → play back. If you hear yourself, the mic works — the problem is app-specific.

Fix 3: Clean the Microphone

The microphone hole (bottom of iPhone, next to Lightning/USB-C port) might be blocked by lint or a case. Clean with a soft brush.

Fix 4: Restart

Hold power + volume down → slide to power off → turn back on

Fix 5: Check Bluetooth

If a Bluetooth device is connected, iPhone routes audio through it. Disconnect Bluetooth to use the built-in mic.

Android

Fix 1: Check App Permission

Settings → Apps → select the app → Permissions → Microphone → Allow

Fix 2: Test Built-in Mic

Open the default voice recorder app → record → play back

Fix 3: Safe Mode

Hold power → long-press Power Off → Safe Mode. If mic works in Safe Mode, an app is interfering.

Fix 4: Clear Phone App Cache

Settings → Apps → Phone → Storage → Clear Cache (fixes mic issues during calls)

App-Specific Fixes

Zoom

  1. In Zoom: Settings → Audio → Test Mic → select correct microphone
  2. Bottom-left of call: click the arrow next to Mute → select correct mic
  3. Leave and rejoin the call (audio devices reset on join)

Teams

  1. In call: three dots → Device settings → check microphone
  2. Settings → Devices → Audio devices → select correct mic
  3. Test in Settings → Devices → Make a test call

Discord

  1. Settings → Voice & Video → Input Device → select correct mic
  2. Click "Let's Check" to test
  3. Toggle "Input Sensitivity" — try "Push to Talk" if auto-detect is not working

Chrome (Google Meet, web apps)

  1. Click the padlock icon in address bar → Site settings → Microphone → Allow
  2. Or: chrome://settings/content/microphone → select default mic

Bluetooth Headset Mic Not Working

  1. Reconnect: forget and re-pair the Bluetooth device
  2. Select as input device: your computer might be using the headset for audio output but not input — check Sound settings → Input
  3. Bluetooth profile: some headsets have two profiles — "Headset" (lower quality, mic works) and "Stereo" (higher quality, no mic). Switch to Headset/Hands-Free profile in Sound settings
  4. Charge the headset: low battery causes mic cutoff before audio cutoff

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