Fraudsters have been using duplicate SIMs to withdraw money from bank accounts linked to those numbers.
The Bengaluru police on Wednesday said that its anti-terror cell coordinated with the Military Intelligence and unearthed six illegal telephone exchanges where 30 SIM boxes with 960 SIM cards were used.
Think twice before you allow others to buy SIM card against your identity documents.
IMEI number - a unique 15-digit serial number of mobile devices - is allocated by global industry body GSMA and bodies authorised by it. When a mobile phone is lost, the victim is required to mention the IMEI number of the handset for tracking.