Specter “ghost” cell phones. The Ghost Busters had nearly 3 years of work to clean up that mess in various parts of the Americas, then it broke out in Africa & especially China who stole the technology that tapped into a frequency that is part of the ghost zone. And it was not a good tap so it was not only ubiquitous for nearly a billion people, it was distorted and more horrifying too.
“Who are you going to call? Not on a Specter Phone System.