This service will help you to get the IMEI serial number of the device. IMEI (International Mobile Equipment Identity) - an international identifier any mobile device. It is unique and consists of 14 digits, the last digit - control.
This identifier set by the manufacturer and used for identifying the phone in networks of GSM and UMTS formats.
At the time of connecting the device to the network operator, the number is automatically transmitted to the network operator.
The service can help if you do not know the IMEI, but you know the serial number.