A cell phone is considered to be a better method of communication system that is being used for day by day communication. Today, the great use of mobile phones has increased the problem of getting it misplaced or lost. As a solution, Sniffer for Mobile Phones has been made into existence. The IMEI number which is embedded to the mobile phones will block the calls and helps in the detection purpose.
Sniffer is a transceiver device which works in a frequency range that is designed to operate. Each mobile phone will have an IMEI number associated with it. IMEI is defined as International Mobile Equipment Identity. IMEI is a 15 digit unique code used to detect the mobile phones. The IMEI number can be identified by using the code *#06#. When a mobile phone gets switched ON, the IMEI number will get transmitted and later the number will get checked with the database of the grey or black listed phones in the EIR register. EIR is defined as equipment ID register which will help the mobile phone to log on to the network to receive and make phone calls.