Taking the battle to the likes of Skype and Google, WhatsApp has launched a group voice and video calling service. “Over the last couple years, people have enjoyed making voice and video calls on WhatsApp. In fact, our users spend over 2 billion minutes on calls per day. We're excited to announce that group calls for voice and video are coming to WhatsApp starting today," the Facebook-owned messaging company said.

"You can make a group call with up to four people total - anytime and anywhere. Just start a one-on-one voice or video call and tap the new "add participant" button in the top right corner to add more contacts to the call." it added. The feature is currently rolling out on the iPhone and Android versions of the app.