Apple News
Whatsapp voice calling service delayed until next year
He also mentioned that the team is still trying to figure out how the service will work in areas with poor data connection or in countries where 2G/EDGE network is still prominent and widely used.
WhatsApp currently enjoys more than 600 million monthly active users, but Koum is not concerned about monetization. The company apparently “has no real immediate plans to make money at WhatsApp” nor does it wish to bring advertising into its app down the road, Re/code noted.
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The service generated only $10 million in revenue in 2013 based on user subscriptions. Its owner, Facebook, isn’t concerned either.