According to a blog post of Facebook Company, their WhatsApp messaging service has exceeded two billion users. The number of users were 1.5 billion and 1 billion in 2018 and 2016 respectively. The Wall Street Journal says that there are 1 billion users for Instagram and 2.5 billion users for Facebook. (These numbers are taken in June 2018.)
WhatsApp used this milestone to emphasize the importance of encrypting the messages of users. But governments pointed out some drawbacks of encrypting messages. According to them this messaging facility might be used for child exploitation, terrorism and other crimes.
Even though there are several drawbacks, WhatsApp CEO Will Cathcart says that they will not disable encryption on this messaging service in order to protect the privacy of users. And also he added that, whenever metadata is needed for any investigation, WhatsApp will provide it.
Cathcart also told The Wall Street Journal that according to the Facebook CEO Mark Zuckerberg, they have plans to make the WhatsApp service interoperable with the other messaging clients of Facebook in future. Cathcart also added that, this integration will maintain its limits, with some features available on messaging services like messenger and will not be translating in to WhatsApp.