Whatsapp audio calls dropping disconnecting after ringing or pickup

This is an obvious quick fix to WhatsApp audio calls disconnecting after first ring or upon pick up by the other party. The fix is an update to the latest version of WhatsApp. My wife&iPhone 11 had version 2.21.41 and after updating to 2.21.50 her disconnection problem was fixed. So you might be wondering wouldn&the iPhone automatically update your WhatsApp to the latest version to fix known issues. I guess apparently not as sometimes the newer updates can cause you problem as well. You have to go to the App Store and see the available updates and determine for yourself whether it is worth it to update or not.