🎥 4. Camera or Voice Apps Using the Mic in Background

Another app running in the background may be “holding” the microphone.

Solutions

• Close all apps

• Restart the phone

• Try a fresh call or voice note

Apps like TikTok, Messenger, Zoom, or Instagram sometimes cause this.

🧹 5. Software Glitch or Outdated System

Minor bugs can silently break your microphone.

Try This

• Update iOS/Android

• Restart your device

• Reset app preferences (Android)

• Reset all settings (iPhone — doesn’t delete data)

💧 6. Water or Physical Damage

A drop or liquid exposure can damage the mic module.

Signs of Hardware Damage

• Mic not working in any app

• Very low voice pickup

• Crackle or robotic sound

This usually needs professional repair.

🧪 How to Test Your Microphone

Before assuming it’s broken, try these quick tests:

1. Open your Voice Recorder app and record a short message

2. Try calling someone

3. Use a video camera app to record your voice

4. Try speakerphone mode (uses a different mic)

If none of these work → hardware issue.
If only one doesn’t work → software/app issue.

🛠️ When to Visit a Repair Shop

You should seek professional repair if:

✔ Your mic doesn’t work in any app
✔ People can’t hear you at all
✔ Sending voice notes sounds muffled
✔ Phone had liquid damage or a recent drop
✔ Mic works only when on speaker

At Boston Mobile Phone Repairs, we can diagnose:

• Microphone module damage

• Water-damaged board

• Faulty connectors

• Software corruption

• Audio IC issues

Fast diagnosis → reliable repair → clear sound again.

⭐ Final Thoughts

Phone microphone issues are common but often easy to fix. Try checking permissions, cleaning the mic, disconnecting Bluetooth, or updating your software.
If the problem continues, a quick professional repair can restore perfect call quality.