Can't make calls on WhatsApp

If you’re having issues making calls on WhatsApp, try the following:
Check your network

Ensure your device is connected to the internet and you have a strong connection.
Try connecting to a different network on Wi-Fi or mobile data. Your current network might not be configured for User Datagram Protocol (UDP), which might stop WhatsApp calling from working properly.
Turn off battery saver and bluetooth

Turn off your battery saver and bluetooth connection.
This is because your battery saver and bluetooth connection may cause issues with WhatsApp calls.
Check your router settings

Check that your router’s security settings and firewall configurations aren’t blocking certain types of connections. If you’re unsure, contact your service provider or network administrator.
If you can’t make a call due to firewall settings, update them to allow WhatsApp calling on UDP and TCP ports 3478, 3480, and 3484.
Restart your device

Turn your device off and then on again.
Check your audio, camera and microphone

Make sure another app isn’t using your microphone, audio device or camera.
If you’re using a computer, make sure you have a camera, microphone and audio device. Try troubleshooting them through your computer’s settings.
Make sure you’ve granted WhatsApp permission to use your microphone and camera.
Note: WhatsApp doesn’t support virtual audio and video devices.
Update WhatsApp

Update WhatsApp to the latest version available.
Note: Calling isn't supported on WhatsApp Web. To make WhatsApp calls on your computer, you'll need to download WhatsApp for Windows or WhatsApp for Mac. Learn how in this article.
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