How to Fix Phone Microphone Not Working (iPhone & Android)

Posted on:

August 28, 2025

Microphones are one of the most essential components in smartphones today. Whether you’re making a call, recording a video, sending a voice note, or speaking to a digital assistant like Siri or Google Assistant, the microphone ensures your voice is heard clearly. But when the microphone stops working, it can feel like your phone is useless.

This problem is common across both iPhones and Android devices. Fortunately, most microphone issues are fixable without needing a full device replacement. In this blog, you’ll find an in-depth, step-by-step guide to identifying, troubleshooting, and resolving microphone problems.

If none of the fixes work, you can always rely on professional service from Mobile Fix Experts. Their certified technicians handle microphone repairs, replacements, and diagnostics for both iPhone and Android devices with speed and reliability.

Understanding the Role of Your Phone Microphone

Why the Microphone Matters

Enables voice calls and video calls.
Records audio for videos, voice memos, and apps.
Powers smart assistants (Siri/Google Assistant).
Allows accurate voice commands for accessibility features.

Types of Microphones in Phones

Modern smartphones don’t just have one microphone; they often feature multiple mics:

Primary microphone – usually at the bottom, used for regular calls.
Secondary microphone – typically near the top, used for noise cancellation and loudspeaker mode.
Front-facing microphone – for video calls and front-camera recordings.

A failure in one mic can cause issues in specific scenarios, like speakerphone calls or video recording.

Common Causes of Microphone Problems

2.1 Software-Related Issues

Incorrect app permissions.
Temporary software bugs after updates.
Outdated operating systems.
Conflicts with third-party apps.

2.2 Hardware-Related Issues

Dust, lint, or debris blocking the mic opening.
Water damage.
Physical damage from drops or impacts.
Faulty mic component requiring replacement.

2.3 User-Related Mistakes

Cases or screen protectors blocking mic holes.
Bluetooth headsets unintentionally connected.
Muted call settings.

Step-by-Step Troubleshooting (iPhone & Android)

Step 1: Restart the Device

A simple restart clears temporary glitches that may affect audio input.

Step 2: Check Case and Screen Protector

Remove accessories to ensure nothing is blocking the microphone holes.

Step 3: Clean the Microphone

Use a soft brush or toothpick carefully.
Avoid compressed air as it can push debris further inside.

Step 4: Test the Microphone

On iPhone: use Voice Memos or Camera app video recording.
On Android: use the default voice recorder or a third-party app.

Step 5: Check App Permissions

iPhone: Settings → Privacy & Security → Microphone.
Android: Settings → Privacy → Permission Manager → Microphone.

Step 6: Update Software

Install the latest iOS or Android updates to fix firmware-level bugs.

Step 7: Reset Settings

iPhone: Reset All Settings.
Android: Reset app preferences.

Step 8: Safe Mode (Android Only)

Boot into Safe Mode to see if a third-party app is causing interference.

Step 9: Factory Reset (Last Resort)

Back up data, then restore to factory settings if all else fails.

Advanced Fixes

Hardware Diagnosis

If none of the above works, the microphone may be physically damaged. A technician can test the mic using professional tools.

Component Replacement

Sometimes the mic must be replaced. At Repair a Device, technicians use genuine parts to restore full functionality.

Water Damage Treatment

If the microphone stopped working after water exposure:

Power off immediately.
Do not charge.
Bring to a repair center quickly.

Prevention Tips

Keep microphone ports clean.
Use high-quality cases that don’t block sound openings.
Avoid moisture and water exposure.
Regularly update phone software.
Schedule periodic diagnostics at Mobile Fix Experts.

When to Seek Professional Help

If you’ve tried all troubleshooting steps and the microphone still fails:

It may be a damaged mic circuit.
It may require motherboard-level repair.
It could be linked to water corrosion or mic IC failure.

At this stage, Mobile Fix Experts can step in to perform board-level diagnostics and replacements.

FAQs

Q1: Why is my iPhone mic only not working on calls but works in videos?
A: iPhones use different microphones for different tasks. The bottom mic may be faulty while the camera mic still works.

Q2: Can apps cause microphone issues?
A: Yes. Apps with restricted microphone permissions won’t record sound. Check settings to fix this.

Q3: How much does a mic replacement cost?
A: Costs vary by model and severity. Use the Instant Quote tool at Mobile Fix Experts for estimates.

Q4: Is water damage repairable?
A: Often yes, if treated quickly. Bring the device to professionals before corrosion spreads.

Final Thoughts

Microphone problems may seem serious, but most can be fixed with simple cleaning, permission adjustments, or updates. When hardware issues are to blame, expert repair services are the safest route.

If your phone mic still isn’t working, explore options at: