Cell, by Stephen King

This is more or less a zombie apocalypse story. The zombies get that way by using cell phones, and only people who were not using cell phones at the time of the "Pulse" remain normal. This becomes the story of a handful of "normies" (King likes to use AA slang) as they travel north, trying to find a way to survive and perhaps re-create civilization.

Cell wasn't as good as the last King that I read (Dr. Sleep), but it wasn't bad, and I love it for making cell phones the root of Evil.