Why are pop culture zombies so strongly associated with communication & communications technologies?

Like:

There are several apparently-independent books/movies where cell phones turn people into zombies (and, as far as I am aware, none where cell phones turn people into vampires or werewolves).
There’s stuff like Pontypool (book & film) or Hyenas (book), where zombieism is either spread by language or created by the absence of language.

More conventional zombie media is absolutely obsessed with communication too. We’re constantly seeing broadcast media, or pirate radio transmissions, or concerned with the ability to communicate for coordination purposes.

A big plot point in the Dawn of the Dead remake, for instance, is that one character is isolated and can only be communicated with via a white board. An attempt to get a walkie-talkie to him ends in his death.
There are always miscommunications, communications breakdowns, and secrets as pivots around which the plot revolves. Or, alternately, the plot is about coordination among the zombies — are they telepaths? Are they learning to speak? Are they swarming like ants or bees?

A philosophical zombie is a person with a big secret — the secret that they have no secrets — and this secret cannot be discovered through communication. Except — in BlindSight, the ending twist is that we find that the p-zombies have taken over because there’s no music on the radio!