*MOBILE TRICK 2:

The “˜James Bond’ Trick

The most basic secret mobile phone trick to listen in on a conversation with a mobile phone is to leave it in a room recording. Trouble is, you never know when people will be in there talking. Also, most phones will only allow a certain amount of record time.
All you have to do is plug the earphones in and leave it in a hidden spot within the room (but in a good position where the sound will be easily picked up). By having the earphones in the phone, it will automatically answer and won’t ring or vibrate alerting others to its presence. Then, when someone is in the room you can just ring the cell phone and listen in.