More than two billion people, around a quarter of the world’s population, use Facebook.
Facebook is struggling to restore its services after what’s believed to be the most serious outage in its history.
It has affected its other platforms including Whatsapp and Instagram.
The failure added to the woes of the social media giant already mired in scandals over its data and privacy practices.
Al Jazeera’s Science and Technology Editor Mereana Hond reports.