Chandigarh: There are reports that WhatsApp is now rolling out internet calling functionality to a wider set of people. Previously the feature was tested by WhatsApp with limited number of (selected) users.

Earlier on Friday, a number of users of WhatsApp’s Android app were able to get the voice calling feature activated by simply receiving a call from a user who had the service turned on. This meant that initial testers were able to extend it to their friends who further helped other WhatsApp users join the club. However, this invite system is not working for all users.

Reports say that WhatsApp is currently opening up the service for Android users and the feature is not yet available on iOS devices such as iPhone.

Previously when WhatsApp launched it’s web.whatsapp.com service, it was not availble for iOS users.

It’s worth pointing out that WhatsApp has not officially announced the rollout of the feature yet.

The voice calling feature will bring WhatsApp in direct clash with apps like WeChat, Viber and Line that already allow users to make calls and send messages. WhatsApp is the biggest instant messaging app in the world, with 700 million active users in January 2015.