In Europe, Whatsapp is ubiquitous. FB Messenger and iMessage are pretty rare here.
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.
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.