In March, WhatsApp began rolling out the voice calling feature for the Android users. In April, the much awaited feature came to other platforms like iOS and BlackBerry 10 users. However, the feature is yet to arrive for Windows Phone users.

In the previous month, the International Business Times had revealed that the voice calling is not the only major feature that is expected to come to its Windows Phone client but also it will bring along other features like video calling, WhatsApp Skype integration, Facebook integration, OneDrive conversations storage support and more.

Citing Phone Arena, another IBTimes report goes on to say that after the arrival of voice calling feature for WhatsApp users on Windows Phone platform, it will not display any ads. As it has been before, WhatsApp will remain free for the first year and for the following years; users are required to spend 99 cents annually to use it.

According to Ordoh, the WhatsaApp voice calling feature will arrive in this month. For Android users, the feature was first rolled out on invitation basis and few weeks later it was directly made available to all users through new app update. However, for Windows Phone users, WhatsApp will not be made available through invitations but it will come to all users in a single phase through a new app update.

It is being said that the most likely reason behind the launch of voice calling feature for WhatsApp Windows Phone user is that developers prefer to roll out the feature to mobile platforms like Android and iOS as they have huge user interface. It is interesting to note that the BlackBerry 10 OS that has a comparatively smaller user than Windows Phone users has already received the WhatsApp voice calling feature.

WhatsApp is the most widely used instant messaging social networking app with over 800 million active users each month. Apart from the aforementioned platforms, WhatsApp is available for Nokia Series 40, Symbian, and Samsung Tizen platforms. In February 2014, Facebook had acquired WhatsApp Inc. The deal was sealed for $22 billion approximately.

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