The Department of Telecommunications (DoT) has released a much-awaited report [ PDF ] on the Net Neutrality issue. The report recommends the Telecom Regulatory Authority of India (TRAI) to regulate the voice calls conducted by the Internet users of over-the-top (OTT) services. If you call your someone living abroad using Skype, Viber, WhatsApp or any other VoIP service, then you are not charged if you have a running Internet pack. If you want to make VoIP call using WhatsApp, Vib or Skype within India, the telecom providers would charge you.
Source: https://thehackernews.com/2015/07/net-neutrality-india-whatsapp.html