HOW TO CHECK THE IMEI NUMBER AND IMEI GENUINENESS
The IMEI number will be displayed after you press *#06# on your mobile

The genuine IMEI number is a 15 digit number.Whatever is the result of the above, genuineness of the IMEI can be checked by sending an SMS to 57886 with the following steps:
Type IMEI [SPACE] [15 digit imei number you found]
and Send it to 57886
The SMS reply will provide the brand name and the model number for which this IMEI number was originally allotted or not.
In case your mobile handset is not having genuine IMEI number, please change his mobile phone before 30.11.2009 to avoid disconnection.