Whatsapp was telling the ability to make calls on Android for quite some time before it finally rolled it out to all users at the end of March. Almost a month later, it made it possible for iPhone users to be able to make voice calls as well. Almost two months since it debuted on Android as a stable release feature, Whatsapp’s voice calling is now available to the select few beta testers of its Windows Phone application.
Version 2.12.38 of the Whatsapp beta app introduces the voice calling feature to the Windows Phone platform for the first time. Most users will have to wait till it exits private beta though since for now just not everyone can get it. Being a beta, that should be mostly for good measure. Anyway, that means that we are not far off from seeing a stable release hit the Store.
Whatsapp currently boasts of over 800 million monthly active users across all mobile platforms and is one of the most popular applications on Android where it has amassed over a billion downloads on the Google Play Store. Voice calling is one of the features that sets it apart from other new age instant messaging applications like Telegram.
Source: Windows Central