Here's the news that the thousands of you who have been hovering over every update on our previous WhatsApp Calls post have been waiting for. The service's calling functionality now seems to be open, no questions asked, no invites needed, no hacks required. The only "catch" is that you seem to need version 2.12.19, which you can find hosted on APK Mirror or on WhatsApp's website.

Once you download the apk file and install it (make sure you have Unknown Sources enabled in your phone's Security Settings to be able to do so), you'll open WhatsApp and the app's UI will have switched over to the new one with the Calls functionality enabled.

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