Wi-Fi+Bluetooth+Mobile Signal Jammer is used to block mobile as well as wi-fi signals within a medium range. It is a user friendly device and can easily be switched on to block mobile phone signals and wifi signals in classroom , libraries ,hospitals ,hostels etc. to avoid disturbance and gives you a break from phone calls ,messages and helps you to concentrate on work . This device can even keep a check on your internet data usage as it has the capability to block even wi-fi signals in a particular area and prevent mobile and internet usage.