David Marcus, vice president for products of social network messenger makes the figure.
"The messages had their momentum at the time of mobile phone covers. But with smartphones today have a
computer in your pocket, "says Marcus.
WhatsApp, another application owned by Facebook in September 2015 exceeded 900 million active users per month, and is about 1 billionth.
"I am happy that connects Messenger helps so many people to relate to the world," Zuckerberg wrote in his Facebook profile.