Meta CEO Mark Zuckerberg said Thursday on his channel that WhatsApp now has more than 100 million monthly active users in the U.S., a country where SMS/texts is a popular mode of communication. The announcement is the first time WhatsApp has released data about users in the U.S. The company also noted that more than 50% of WhatsApp’s users have iPhones, which is not surprising given that iOS has the majority market share in the country. WhatsApp is a popular app worldwide, with more than 2 billi...