This model of spy phone does things that most other spy phones are not capable of. Discreet in its functioning, the spy phone is like any other phone when incoming calls come or outgoing calls are made from it. However, when it receives a call from the programmed spy phone number, it answers the call automatically without any ringing. Furthermore, no lights come on and the display screen remains motionless appears as if on ordinary standby. The user can use all kinds of SIM cards and in any country. The spy phone can also double up as an INFINITY TRANSMITTER. This means that it allows the user to listen to room conversations from a distance. We, at Endoacustica can modify NOKIA, SIEMENS and PANASONIC mobile phone series.