World famous mobile messaging service WhatsApp has started testing out long-awaited feature. The voice calling feature is beginning to roll out to some users but still isn’t yet available to everyone . WhatsApp calling uses an internet connection to make phone calls instead of a carrier’s network.

WhatsApp hasn’t made an official announcement yet on Friday night pictures and videos appeared on Reddit.  According to a Reddit user: “Its requires an invite, a person with the call feature needs to “call” another person to be able to start using the feature.”

Check out images and a video of the new user interface that features voice calling.