Did you know? 68% of people suffer from phantom vibration syndrome - the feeling that one's phone is vibrating when it's not. Other terms for this concept include ringxiety , fauxcellarm and phonetom . According to Michael Rothberg, the term is not a syndrome, but is better characterised as a tactile hallucination since the brain perceives a sensation that is not actually present. Phantom ringing may be experienced while taking a shower, watching television, or using a noisy device. Humans are particularly sensitive to auditory tones between 1,000 and 6,000 hertz, and basic mobile phone ringtones often fall within this range. Phantom vibrations develop after carrying a cell phone set to use vibrating alerts. Researcher Michelle Drouin found that almost 9 of 10 undergraduates at her college experienced phantom vibrations. (Note : The above mentioned percentage value may not be accurate and may change)