Because of misuse of the Sim card will be block by the service provider.
To block the SIM card, a person must call the company's customer service line. They will ask identifying questions, and then they will block the SIM card.
You can block the sim of any person directly. You must tel the reason to the company of that mobile phone sim cards as why you want to block someone's sim card. Otherwise it is not possible.
To block bsnl sim in online one can go to the computer security settings or their anti virus settings and add the bsnl sim in to their block list to prevent it from showing up online.
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You should go to the customer care and report to the sim office.
You don't block the SIM - you block the handset - by contacting your service provider. Explain to them your phone has been stolen, and ask them to block your handset. Blocking the handset means that no matter how many SIM cards are inserted - none will work.
If it is PUK block or sim block you need to call nextel, if you blocked it by putting in a different sim from another company, then your phone is fried.
You can block a Blackberry without a sim card,using the serial number.
It's not possible. You can only block your own sim card by contacting Vodafone and reporting it lost or stolen.
It means that the Sim card is blocked by the network provider and it cannot be used
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