Sam Callahan Wiki Profile | Contact details 2017 (Phone number, Instagram, Twitter, Facebook, Official Website)- Sam Callahan is a Young and Dashing Musician as well as Singer. This X-Factor star is a last minute addition in CBB house. It means he is one the celebrity who participate in the Celebrity Big Brother 2017. This time the Channel5 series returns 0n 3rd January 2017. This show gives him the opportunity to restart his career. Here we are showing you the contact details of Sam Callahan.