WhatsApp has been forced to delay its planned mid-2014 launch of voice calling until next year.
The company said it is still working to overcome some technical hurdles, such as functionality over 2G networks and gaining access to select smartphones’ microphones for novice-cancellation purposes.
WhatsApp is an over-the-top messaging application that lets smartphone owners avoid carrier-based messaging fees. It was acquired by Facebook earlier this year for $21 billion.
The company now says the voice calling service should go live during the first quarter of 2015
