They are usually not allowed to be used inside the theater and while the movie is playing because they don't want anyone to make a pirate copy. But you can take pictures with the cast and of the event before the movie starts and then put it away. And your phone is definitely allowed, no one is going to forcibly take your stuff, bring it anyway.I want to take get pictures and videos, but the ticket says in fine print "Cameras and video recorders not allowed." I wonder if cell phones count...