Block Ur Enemy’s SIM Card

Here I am going to share a simple trick forblocking 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