1. Activate the "Automatic Answer" in
the headset profile of your cell phone
and set the ringing volume to "Mute" 2. Short-circuit the left middle and right
pins on the bottom of the mobile
phone with all connections touching
each other this will activate profile
"Headset".
If you cant do this just keep your earphone connected to mobile. 3. Now place it under a table in a room
and call it. Now you can use your
phone for checking out what people
are talking about in a room. Just call
on your phone. 4. The phone receives the call without
ringing and you can listen to what
people are saying.