What protocol does WhatsApp use?
WhatsApp uses XMPP (eXtensible Messaging and Presence Protocol) to handle the message delivery system. XMPP protocol has been used in various chat applications such as Google Talk, Facebook messenger etc.
How does WhatsApp call work?
The service is free, and not charged by WhatsApp. Much like other apps like Skype and Viber offering VoIP, WhatsApp voice calling uses a data connection to place a call, whether over Wi-Fi or mobile data. This data use however can be chargeable, based on your Internet plan.19 Mar 2015
Does WhatsApp call data?
WhatsApp Call works via the Internet i.e. it uses your data plan, not your network’s voice calling ability. To put it simply, you won’t be charged for making a call or have your minutes depleted. However, you will be charged for using data, depending on your phone’s data plan.23 Apr 2015
Is WhatsApp call VoIP?
The latest version of WhatsApp for iPhone adds a new voice calling feature that allows you to talk to any WhatsApp user around the world for free. Similar to Skype or FaceTime Audio, WhatsApp Calling uses an Internet connection (VoIP) rather than cellular phone service to make calls.21 Apr 2015