It would perhaps not be too wrong to say that “Mr. Harrigan’s Phone” begins with all the exciting promises of films adapted from Stephen King stories, but the work ultimately lets down on all fronts. Based on a novella by the same name, the new Netflix film follows a teenager named Craig who has a set of supernatural experiences after the death of Mr. Harrigan, an elderly man he was very close to. Along with supernatural happenings, there are shades of adolescent learning about life and morals here as well, but ultimately, “Mr. Harrigan’s Phone” remains a forgettable watch.