how many SIM Cards

-->how many SIM Cards there are, identify them like this.

-->Citizens can easily find out how many SIM Cards have been issued in their name. 

-->If found to be extra, DVT allows them to block them by filing a complaint. 

https://tafcop.sancharsaathi.gov.in/telecomUser

So,you can visit the above website and enter the phone number, you will receive an OTP. 

-->Through it you can login and find out how many SIMs you have.

-->If it is found to be misused, there is a possibility to block it.

-->Otherwise not required to block.