In here whatsapp is omnipresent, used for everything & everywhere, no distinction whatsoever, if you don't have it you're cut off, doesn't matter if it's public or private

there were some doubts about it

Brazilian Bureau of Institutional Security:

It is not reasonable for the country's confidential intelligence information to be passed through messaging app from a private company of a foreign nation...

Can confirm, almost everything is done through apps here, especially the green one, consequently the screen time is very high.