Mark Zuckerberg, founder of Facebook, delivers a keynote speech during the Mobile World Congress in Barcelona, Spain February 22, 2016. [Photo/Agencies]

BARCELONA -- Facebook founder Mark Zuckerberg said on Monday the "whole world deserves to have access to the Internet," to a packed crowd at the Mobile World Congress (MWC) in Barcelona.

Zuckerberg's appearance was one of the most eagerly expected event of the opening day of the congress, which began Monday and runs until Thursday.

"Everyone deserves access to the Internet and I don't understand how we can still be like this in 2016... if there are more and more people with Internet access, it is a business model which works," said Zuckerberg, who highlighted that more clients for Internet providers would then lead to "investment in infrastructure."

He also spoke about the move towards 5G, questioning why the industry was moving so quickly to this level of connectivity when the important thing is that all the world can afford an Internet connection, "not just those who have money to pay for expensive connections."