93% of Brazilian internet users use WhatsApp

"Brazilians had complained bitterly on social media about the suspension of WhatsApp, which is a hugely popular app used by many to communicate with family, friends and colleagues both inside of Brazil and abroad.
Ninety-three per cent of the country's internet population use WhatsApp, according to the TechCrunch website, with many young and poor Brazilians taking advantage of its free text message and internet telephone service.
Within hours of the suspension being coming into force, the hashtag #Nessas48HorasEuVou (#Inthese48hoursIwill) began trending on Twitter, with Brazilians joking about all the things they would do during the suspension."
Source:  BBC News, 17th December 2015