Phantom Sensations

Ever feel that phantom cell phone vibration? I wonder what causes that? Is it the anticipation of a call, the longing of contact with another person? I must really need interaction as I'm starting to hear my GPS randomly tell me to "Turn Left" while driving even though I don't have a destination programmed in. Is my GPS leading me to my destiny? Perhaps the next time I hear the phantom instruction I will follow and see where it will lead!