phantom vibes

Nicolas kindly directs us to the Urban Dictionary's definition of 'phantom ring':

Term used to describe when someone thinks they hear their cell-phone ringing or feel it vibrating in their pocket when it’s actually not.

Heh, that happens to me all the time. My front pants pocket vibrates, sometimes even when the phone's not in there, spooky. Sometimes I wonder if the nearby nerves are getting cooked by the radio, causing them to misfire. Should I worry?