WHAT’S CHANGING IN MESSAGING
Its first step will be to make its three messaging services communicate better with each other. That would let you message a friend on WhatsApp from Facebook Messenger, which isn’t currently possible. It would also link your messaging accounts to your Facebook ID, so people can find you more easily.
Zuckerberg also promised to greatly increase the security of these messages. It will implement so-called end-to-end encryption for messaging, which would scramble them so that no one but the sender and recipients could read them. That would bar access by governments and Facebook. WhatsApp is already encrypted this way, but Messenger and Instagram Direct are not.
The first change users might notice is their address book, said Siva Vaidhyanathan, director of the Center for Media and Citizenship at the University of Virginia. While your Facebook, Instagram and WhatsApp contacts might be quite different now, if the services combine to some degree, your contact lists will, too.
“As these services merge, we might end up basically having these huge combined address books from three messaging services,” he said.