I assume you're in the US? As I understand it, it's less popular there. I'd say at least 95% of smart phone users in the UK use WhatsApp. I think that's probab

I assume you're in the US? As I understand it, it's less popular there. I'd say at least 95% of smart phone users in the UK use WhatsApp. I think that's probably true of the rest of Europe as well.