VIDEO : Mark Ruffalo Shows How Serious Was The 'No Phone Rule' On Set Of 'Avengers: Endgame'

Marvel Studios was determined to keep any spoilers from leaking and instilled a no phones rule on set. Yet photos of the ?Avengers: Endgame? set show that not everyone followed that rule. Mark Ruffalo recently shared a photo on Twitter of everyone on their phone on set. He said: "More proof we took the ?no phones? rule to heart while on the set of #AvengersEndgame.? Since the release of the film, other stars like Chris Hemsworth and Robert Downey Jr. have shared videos from the set.