The SexyBack singer was in London yesterday promoting his new movie The Social Network, a film about the rise of Facebook creator Mark Zuckerberg.
During a press conference with co-stars Jesse Eisenberg and Andrew Garfield, the mobile phone interference with the microphone kept creating a white noise.
Justin said: 'Sorry about that, I have a metal plate in my head.'
But despite starring in the new movie about social networking site Facebook, Timberlake said he doesn't have a page himself.
He added: 'I don't use Facebook as I would feel like I was missing out when I could be trying out for the American team at the Ryder Cup.
'That was embarrassing, the team that played best definitely won though.'