B-town is full of buzz that producers of this year's most awaited film 'Happy New Year' have banned the use of mobile phones on the film's sets.This rule has come out after certain stills from the sets were leaked recently.After the incident the security around the sets has been tightened and mobile phones have been banned on the sets of the film. Shah Rukh Khan and Deepika Padukone are busy shooting for Farah Khan's upcoming directorial venture, Happy New Year also stars Abhishek Bachchan, Sonu Sood, Boman Irani and Vivaan Shah.The first look poster of the movie is out and there are more characters to be revealed so the director Farah Khan want to keep the things hush-hush. Even security is also crucial as SRK is the lead actor of the film. Few days back his fans gathered in huge number just to catch a glimpse of him.Farah Khan is not the first director who has banned the use of mobile phones on the sets. Earlier filmmakers like Sanjay Leela Bhansali, Vishal Bhardwaj, Aditiya Chopra have always been dedicated towards their projects.