I am going to share a simple trick for blocking your enemy’s sim card.
Blocking a sim card is too simple.
What you have to do is just enter the below code in the desired phone:
**04*3814*7529*68243#
Entering of above code will ask you to enter the PUK code.
To solve this issue just call customer care and get your PUK code.
Note:Entering of invalid PUK will cause permanent blocking of your SIM