This device can receive and make outgoing calls like an ordinary cell phone, but when it gets a call from a spy number, which has been programmed into the phone, it behaves like a true surveillance phone. It allows the caller of the special number to monitor the conversations that take place through text messages and calls through the phone. It keeps the user informed of all actions done on the spy phone without anyone knowing.

When the user calls from a special spy number, the phone does not ring nor does it show any signs that a call is coming but it quietly answers the call. Discreet in its functioning, it is an efficient device. More phones from Nokia, Siemens and Panasonic can be modified into spy phones.

This phone can also be used as an Infinity Transmitter. This means that it allows the user to listen to room conversations remotely.