AP
WhatsApp is a messenging service that doesn't require users to pay for texts. Instead, messages are sent over the Internet. It's particularly popular overseas where carriers typically charge users for every text message sent. The app is found on iPhone,
It's also just one of several super popular texting
This is an important stat. While companies like Snapchat have remained silent about how many active users they have, WhatsApp is one of the few that are openly sharing how many people are truly using the service.