After by Regular Android and iOS, also became users of Windows iPhone system can take advantage of voice calls feature on Whatsapp, came the new update of the application Whatsapp on Windows Phone system with regard to sound the same characteristics call feature, despite the delay this feature and wait for the user for a long time before the application supports Officially voice calls.
The new version of the application and is Whatsapp version 12.02.60, Microsoft has developed the application on the store for free download and you will find download this new version in the lower link.
It is noteworthy that voice calls Whatsapp advantage over Internet protocol used in order to make calls between users, and the Atsab added in the description of the application within the download page the words: "Call your friends and family using Alwatsab even if they were outside of your country."
Download Whatsapp for Windows iPhone version 02.12.60