International Mobile Equipment Identity (IMEI) number which does not have for your handsets will stop working from 1st December, 2009. If your hand set no IMEI number, The Department of Telecommunication to stop services to handsets. IMEI is exclusive 15 or 17 figure classification number of the Mobile Handset.
IMEI number is a chief tool for the handset tracking. No two mobile handsets in the world the same IMEI number. If you check your IMEI number just dial in your phone *#06# if in your hand-set no IMEI number Don’t worry, People can use a service started by Mobile Standards Alliance of India to supply applicable and exclusive IMEI number to all handsets only Rs 199.
If you check your IMEI number visit the website this [LINK]