How to Troubleshoot No Audio During a VoIP App Call

Nothing is more frustrating than finally getting the time to call home, only for the call to go silent and realizing you can’t hear each other. It’s more than a technical issue, it’s a missed conversation. Fortunately, most no-audio problems have straightforward solutions.

In most cases, the issue comes down to microphone permissions, Bluetooth settings, your internet connection, or the app itself. This guide explains the most common causes and how to fix them step by step.

Quick Diagnosis One Table

Before trying every solution, identify what’s happening during the call.

Fix 1: Check Microphone Permission

If the other person can’t hear you, your phone may not have given the app permission to use the microphone.This commonly happens after installing a new app, restoring a phone, or updating iOS or Android.

On iPhone:

Settings → scroll to the app → tap it → make sure Microphone is switched on.

On Android:

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

After enabling the permission, end the call completely and start a new one.  

Fix 2: Make Sure You Aren’t Muted

It sounds obvious, but it’s surprisingly common. Most calling apps include a mute button during calls. If it’s enabled, the other person won’t hear anything even though the call stays connected.Look for the microphone icon during your call and make sure it isn’t crossed out.

Fix 3:Check Whether Bluetooth Is Taking the Audio

If you’ve recently used wireless earbuds, headphones or a Bluetooth speaker, your phone may still be trying to send audio there. Even disconnected devices can sometimes remain selected as the audio output.

Try this:

• Turn Bluetooth off completely.
• Switch the call to your phone’s speaker.
• Start the call again.

If the audio returns, Bluetooth was the problem.

Fix 4:Test Your Internet Connection

VoIP apps depend on a stable internet connection. If your Wi-Fi is weak or your mobile signal keeps fluctuating, audio problems usually appear before the call disconnects.

A quick test is to switch networks.

• Change from Wi-Fi to mobile data.
• Or switch from mobile data back to Wi-Fi.

If one connection performs noticeably better, you’ve found the cause. 

For a deeper look at what affects call quality on internet-based apps, our guide on Wi-Fi calling not working covers the full range of connection issues.

Fix 5: Update or Reinstall the App

Calling apps receive regular updates to improve compatibility with new versions of Android and iOS.Running an outdated version can sometimes affect audio routing or microphone access.

Before making another call:

• Install any available updates.
• Sign out and back in.
• If problems continue, reinstall the app.

After reinstalling, remember to allow microphone permissions again.

Fix 6: Check Speaker Settings

If you can hear nothing but the other person hears you clearly, the issue is probably your speaker.

Try these quick checks:

• Increase the in-call volume.
• Switch to speakerphone.
• Make sure another device isn’t connected through Bluetooth.
• Clean your phone’s earpiece if it’s blocked by dust.

If the speakerphone works but the earpiece doesn’t, the issue may be with your phone rather than the app.

If  Still Not Working

If you’ve tried all of the steps above and still have no audio, ask the other person to check their own device. 

The issue could be:

• Their microphone permissions.
• Their Bluetooth settings.
• Their internet connection.
• Their phone’s speaker.

If the problem only happens when calling one specific person, it’s usually their device rather than yours.If every call has the same issue, contact the app’s support team through the official help centre.

 And if you regularly call internationally and want a reliable connection, a dedicated international calling app with strong network routing makes a noticeable difference to call stability.

Quick Wrap Up 

Most VoIP audio problems have a simple solution.Start by checking microphone permissions and Bluetooth settings, then test your internet connection and make sure your app is up to date.Working through these checks one by one usually gets your calls working again within minutes.

Frequently Asked Questions

Having trouble hearing someone during a VoIP call? Here are the answers to the questions users ask most.

Why does my VoIP call connect but have no audio?

The most common causes include blocked microphone permissions, muted calls, Bluetooth audio routing, unstable internet, or an outdated version of the calling app.

Why can they hear me but I can’t hear them?

This usually means your phone is sending audio to the wrong output, such as Bluetooth headphones, or your speaker volume is too low.

Why can I hear them but they can’t hear me?

Check whether your microphone permission is enabled and make sure the call isn’t muted. Restarting the call after granting permission often resolves the issue.

Could a Bluetooth device cause no audio even if I’m not using it?

Yes. Phones sometimes continue routing audio to previously connected Bluetooth devices even when they aren’t actively being used.

Does reinstalling the app delete my account or contacts?

No. Your account is stored securely on the provider’s servers. Reinstalling only removes the app from your phone, not your account or saved information.