Quantum Cell Phones and Communicating with Alternate Realities.

This question may sound incredibly naïve to some. But will so-called quantum cell phones be able to communicate with "alternate quantum realities"? Because that would be pretty neat. You could talk to loved ones, deceased where you are, but alive in an alternate reality. And that would be, oh, so comforting too. Am I wrong?

Anyways, my question is partly rhetorical, because obviously this won't be the case. My question then: why not?