Following a deal with the social network, 3 customers can access 0.facebook.com – a lightweight version of Facebook's mobile site, which 3 says will load quicker than the standard mobile version.
The site does not have graphics or photos. However, to view an image, users simply need to click on a link to navigate through to the standard mobile site. Three said users would be warned they are leaving 0.facebook.com and standard data charges will apply.
"At Three, we want to make the mobile internet easy and affordable for everyone. We are delighted to work with Facebook to bring one of the most visited mobile websites to our customers for free," the mobile network said.
Henri Moissinac, head of mobile business at Facebook, added: "Thanks to our collaboration with Three, people will be able to stay connected to their friends on Facebook while they are on the go – all completely free.
Three’s move comes just days after rumours about a Facebook-branded smartphone surfaced. However, while the social network has denied any involvement with mobile phone manufacturers, Bloomberg cited an unmade source that claimed Facebook was working closely with INQ on a new handset.