|i searched on google and was relieved to find this thread - its not just me!
I just bought a cellphone with bluetooth, which I keep in my left pants pocket. Since it starting to use it, i've noticed a twitch in my left thigh, just below the area where the phone would rest.
The phone alert is set to vibrate then ring and has bluetooth on.
For the last two days i've been keeping the phone out of my pocket (dropped once already) and the twitch has gone away. Time for a little experiment I reckon. In & out of pocket, bluetooth & vibrate on & off.