If the microphone on your phone stops working, people may not hear you during calls, voice notes may record no sound, or video recordings may come out silent. This issue is more common than most users think and is often caused by software settings or simple blockages rather than hardware failure.
I personally faced this problem when people on calls complained they couldn’t hear me clearly. Before assuming the mic was damaged, I tried a few simple fixes that restored normal mic function without visiting a service center.
In this article, I’ll explain why phone microphones stop working and share practical fixes that actually work.
How Microphone Problems Usually Appear
Mic issues may show up as:
- No sound during calls
- Very low or muffled voice
- Voice notes recording silence
- Mic works in some apps but not others
- Video records audio but calls don’t
These symptoms help identify the real cause.
Common Reasons Phone Mic Stops Working
1. Dust or Debris Blocking the Mic
Mic holes are very small and easily blocked by dust.
2. App Permission Issues
Microphone permission may be disabled accidentally.
3. Bluetooth or Headset Connection
Audio input may be routed to another device.
4. Software Glitches
Temporary system bugs can disable mic access.
5. Water or Moisture Exposure
Moisture affects mic sensitivity immediately.
Fixes That Actually Work
Method 1: Restart the Phone
This was the first fix that helped me.
Restarting:
- Clears temporary system glitches
- Resets audio services
- Fixes minor mic access issues
Always try this first.
Method 2: Check Microphone Permissions
Apps can’t use the mic without permission.
Steps:
- Go to Settings → Apps
- Select the affected app
- Tap Permissions
- Allow Microphone
Repeat for calling, recording, and video apps.
Method 3: Turn Off Bluetooth
This fix solved my issue once.
What to do:
- Turn off Bluetooth
- Disconnect wireless earbuds or car audio
- Test the mic again
Audio input may be routed elsewhere.
Method 4: Clean the Microphone Hole Carefully
Dust blocks sound input.
Safe cleaning tips:
- Use a soft brush or toothpick
- Gently remove debris
- Do not insert sharp objects
- Avoid liquids
This often restores mic clarity.
Method 5: Test Microphone Using Voice Recorder
This helps identify whether the mic is working.
What to check:
- Record voice note
- Play it back
- Test in different apps
If mic works in one app but not another, it’s an app issue.
Method 6: Boot Phone into Safe Mode
Safe mode disables third-party apps.
What this tells you:
- If mic works in safe mode, an app is causing conflict
- Uninstall recently installed apps
This step is very helpful for diagnosis.
Method 7: Update Phone Software
Mic bugs are often fixed via updates.
- Go to Settings → Software update
- Install pending updates
- Restart phone
When It’s a Hardware Problem
Mic repair may be needed if:
- Mic doesn’t work in safe mode
- Phone was dropped or water-damaged
- Mic doesn’t work after factory reset
- Calls and recordings are completely silent
Professional repair is required in such cases.
What You Should Avoid
- Using liquid cleaners on mic holes
- Ignoring water exposure
- Blocking mic with thick cases
- Installing fake “mic booster” apps
These can permanently damage the mic.
FAQs
Why does mic work on speaker but not on calls?
Different microphones are used for different functions.
Can software updates break mic?
Rarely, but bugs can occur temporarily.
Does factory reset fix mic issues?
Only if the issue is software-related.
Is mic replacement expensive?
Usually affordable compared to screen repair.
Final Thoughts
If your phone microphone is not working, the issue is often caused by blocked mic holes, permissions, or Bluetooth conflicts—not immediate hardware failure.
From my experience, turning off Bluetooth and cleaning the mic hole fixed the problem quickly. Always try simple fixes before visiting a service center.
Vaishnav Singh is the founder and primary author of TechHary.com. Based in Mumbai, he brings hands-on professional experience to his writing, having worked extensively as a Windows expert within the IT industry. His practical background in solving complex technical issues fuels his passion for creating clear, helpful, and relevant content. At TechHary.com, Vaishnav dedicates himself to publishing in-depth articles, guides, and insights aimed at demystifying technology for enthusiasts and professionals alike. His mission is to build a trusted resource where readers can find reliable information to navigate the ever-evolving tech landscape.