Danny Boyle is back pushing cinematic boundaries — and this time, he’s doing it with an iPhone. In an exclusive behind-the-scenes sneak peek from 28 Years Later, which becomes available to buy ...

"28 Years Later" was released in June, with the film building upon the events of "28 Days Later" (2002) and "28 Weeks Later" (2007). The film grossed an estimated $150 million worldwide.