The popular instant messaging client WhatsApp, recently acquired by social network giant Facebook, is to add voice services to its feature list this spring. Not only will WhatsApp users be able to send and receive IMs as they have enjoyed doing so for years already, but friends and family will be able to hold voice chats through the clients too.  

WhatsApp CEO Jan Koum made the announcement at Mobile World Congress. Voice services will be deployed on both Android and iOS first, with Nokia and BlackBerry phones to follow suit. This shouldn't come as much of a surprise to Windows Phone owners. That said, there is quite the variety of VoIP apps already available on the platform – including Microsoft's own Skype.

We'll keep you posted on any updates.

Source: TechCrunch