"My off-screen chemistry with Sonal is very strong. I don't know what you guys have read on Twitter," Neil said.
"As far as on-screen chemistry is concerned, she is a great person. She is very strong, gorgeous and a brilliant actress. Besides she is a great friend," he added.
Neil dedicates the film to his father, singer Nitin Mukesh and his nephew, who are huge horror movie buffs.
Co-directed by Sheershak Anand and Shantanu Ray Chhibber, "3G" is slated for a March 15 release.