I would like to know the answer to this too. Every time something happens weird with my phone i juice it down to the fact that it is technology and the fact that my phone isn't a smart phone and that maybe it's just faulty. But didn't they have a movie or something about white noise? I never saw the movie or at least I don't remember seeing it. But in the movie weren't spirits trying to connect through technology then? I'm almost positive that they can communicate to us through technology and maybe that was your spirit guide trying to validate to you that he or she is there and real.