Then your sim is probably dead. You need to get yourself a new one. Go to Hutch gallery and get it done. They'll charge you Rs. 99 for the new sim and your number will remain same.
Did you or anyone else entered wrong PIN or PIN code thrice and then wrong PUK or PUK2 code ten times? This may be the reason of your sim getting rejected or you may have not recharged it since a long time. This sim won't work on any phone. Use will have to get it replaced from the company.
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