Write and send messages to your friends and contacts from your iPhone.
Aimed at people in West Africa, the BBC will use the popular messaging app to provide updates about the spread of Ebola.
Mark Zuckerberg says he's not yet sure how he plans to see a positive return on his massive investment in the messaging service.
The closing of the deal follows last week's regulatory approval from the European Commission.
With FTC approval granted in April, the approval in Europe means the deal should finally wrap up soon.
Chinese company Apus has released its pared-down Android launcher to massive international success. But it's doing it without focusing on the Chinese market. We sat down with founder Li Tao to find out why.
In the six months since Facebook announced it was buying the messaging app, the service's monthly active user base has grown by 150 million.
WhatsApp went down for a couple of hours last night, and Facebook apologised just days after buying it.
News of continued growth in users and profit last quarter gets overshadowed by concerns over future spending on acquisitions, headcount and other items.
As the acquisition draws to a close, co-founder says company is most concerned with growing its user base and engagement and would be happy to just break even.
Facebook wants European competition watchdogs to investigate its $19 billion acquisition of WhatsApp in a bid to head off future antitrust problems.