99% of all the ones I care about to be honest.
Maybe it's a function of me being an eastern-european expat living in London, but almost every here (Europe) uses WhatsApp.
Edit: looks like I was wrong. I'm in the Netherlands. In the Netherlands and our neighbouring countries, Whatsapp is ubiquitous, so I presumed the rest of Europe was the same. I guess this proves that assumption is the mother of all failures.
In Spain in fact it's ridiculous - surveys show approx 97% of the population saying they use it regularly (https://www.messengerpeople.com/global-messenger-usage-stati...).
https://english.elpais.com/elpais/2015/02/16/inenglish/14240... has some interesting background on why. I suspect also the fact that Latin America tends to use whatsapp quite heavily (https://www.messengerpeople.com/global-messenger-usage-stati...) probably makes a difference too.
Latin America is basically WhatsApp and nothing else.
https://www.messengerpeople.com/global-messenger-usage-stati...
iMessage and Telegram covers everyone I know.
She probably doesn't know what an SMS is (those are those things her bank sends her, right?).
She knows that the green Whatsapp logo is for talking to her friends.
She probably wouldn't click the envelope looking thing.
(I'm not being facetious - IMO HN readers massively overestimate user capability.)
I remember I missed a few calls from my mom recently, and she asked me if I noticed her missed calls. I didn't have any missed calls as she was calling me through WhatsApp, but in such a way that she thought is the "regular" way of calling. I explained, now she knows. Not sure where this is going...
WhatsApp new version updates gets prime time News spot in even prominent, respected News channel.
Social structures are being built on WhatsApp here, Relatives get offended when you don't join their WhatsApp groups, people don't believe when you say that you don't use WhatsApp, Package disptach details from eCommerce arrive through WhatsApp(no permissions asked) and of course spam arrives through WhatsApp(Local shops wish for your birthday because you signed up for that damn discount card 10 years ago).
Also I have a dumbphone and I am the only person my friend send SMS too. That makes me quite a unique person !
SMS only works if you live in a region where unlimited SMS plans are standard AND you don't have any friends outside of that region OR WhatsApp doesn't have market share there. Basically only US.
Essentially no-one as we've all stopped trading actual phone numbers years ago.
