How to Get as Many Users as Possible With WhatsApp

In India, it's like 71% choose the WhatsApp app actually for messaging. And the same numbers sort of in Brazil, in Mexico and South Africa. So how do we get as many users as possible? Well, we get access to users who don't even have smartphones. But then coming back to what you were saying there, you're going to want a lot of users and you want to create a really simple app.