SF3, also known as the SmartFone Flick Fest, is an international smartphone film festival based in Sydney, Australia, that celebrates films made entirely on smartphones or tablets. It provides a platform for filmmakers of all ages and experience levels, from beginners to professionals, to showcase their work to a global audience. The festival features live screenings, red-carpet events, award ceremonies, and offers prizes across various categories. SF3 is recognized as one of the world's most prestigious and innovative smartphone film festivals, with its Gala Finals often held at the Sydney Opera House.