Cell : a novel
(Book)

It may seem odd, but it's true--something as simple as one phone call can change the world forever. And that's exactly what happenes on October 1, when a single pulse is simultaneously transmitted through every cell phone on the planet. After the Pulse, an unspeakable transformation occurs. People everywhere begin devolving into inhuman killing machines--and civilization as we know it grinds to a halt in a terrifying riot of violence.

870,Lexile.