VIDEO : Soderbergh's iPhone Thriller Rremieres In Berlin

On Wednesday, Director Steven Soderbergh said he so enjoyed making his psychological thriller ?Unsane? on an iPhone, he would find it hard to go back to conventional filmmaking.
?Unsane? premieres at the Berlin film festival. It was shot over just two weeks - way shorter than the months a movie usually takes.
It tells the story of Sawyer Valentini, who moves to a new city to escape her stalker David. She finds herself admitted, though, to a mental health institution where he works.
Sawyer is played by Claire Foy.