Signal is made with the help of the original WhatsApp-Developer and it is much better. That's why the call feature is not available in that. The one which we are installing and using from Ubuntu-Software is Web version. The calls features are only available in WhatsApp native Desktop app 64-bit(Which the official website show that only Mac and window native app for desktop are available ), not in WhatsApp Web,and unfortunately they haven't developed the native app for Linux. Whatsapp desktop application free download The problem is that whenever I click on these links, it shows an alert to open the desktop app and when I cancel the dialog, it does not take me to WhatsApp web and I am stuck on the page.I have checked for defaults and protocols but WhatsApp doesn't appear there, nor are there any settings in the WhatsApp desktop app to remove such functionality. When I click on links, I mean to open the web app where I can send a message from my business account. I use WhatsApp Desktop app for personal use. I have a personal and a business WA account.