According to a new report from digital analytics firm Similar Web - which analyzed Android data from a total of 187 countries - WhatsApp is the most popular app in the world, claiming 109 countries, or 55.6% of those surveyed. Some of the countries where the Facebook-owned messaging service leads are Brazil, Mexico, India, Russia, and many other countries in South America, Europe, Africa, Asia, and Oceania. The second spot was claimed by the Facebook Messenger app, claiming a total of 49 countries including Australia, Canada, and the US. So, in all, there are more than 150 countries...
Source: http://www.gsmarena.com/whatsapp_rated_worlds_most_popular_messaging_app_bbm_least_downloaded-news-18426.php
