How To Block Unknown Sim Cards or Numbers Registered On Your CNIC

668, the new SIM verification system is in place for quite some time now. Many of us are worried of SIMs registered against our CNIC, that we never u
Mobile companies are allowing cell phone customers to block those SIMs which were never purchased by them.
You can do this by following these steps

Download form from here
Get it printed
Fill it yourself, other than mobile numbers that you