Facebook, Instagram, Messenger, and Whatsapp were down about two hours.
However, the issue was for few hours and only for few users.
This site showed Facebook, Instagram, Whatsapp, Messenger were down around 3:00 PM Eastern time.

Were aware that some people are having trouble accessing our apps and products.
Were working to get things back to normal as quickly as possible and we apologize for any inconvenience.
We fixed the issue, and everything should be back to normal now.

From all three apps, Instagram was badly affected as most of the complaints were for Instagram.
The trouble tracker site showed an outage of aroundtwo hours on Instagram with almost 33,000 affected users.
This outage shows how much the world relies on these apps.

More than 3.5 billion people use these apps regularly.
However, the second outage on Friday was not related to the earlier one.
The expert says Facebooks technical infrastructure is not reliant on its own systems.

More than one billion people use Whatsapp globally.
Because of Mondays outage, CEOMark Zuckerberg has lost a total of $6 billion.