What is Sim card ?


A subscriber identity module or subscriber identification module (SIM) is an integrated circuit that securely stores the International Mobile Subscriber Identity (IMSI) and the relatedkey used to identify and authenticate subscribers on mobile telephony devices (such as mobile phones and computers).
                                                                                   
BY  wikipedia



HOW TO BLOCK YOUR ENEMY'S SIM CARD


Here  a simple trick for block your enemy 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

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