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how i can duplicate a sim card? Answered

I would  like to have my number at home, but sometime I need to keep it with me in the job, but anyway my family need that number at home.

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user
frollard (author)2010-03-06

Do you want to just dupe the information (address book, etc) or the full functionality (use 2 phones on one account)

google 'how to clone a sim card'.

as others say, its illegal/contravenes the TOS of everything...

it is possible with fairly simple equipment - the hard part is breaking the encryption. 

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user
DELETED_GuardianFox (author)2010-03-05

It's called spoofing and is likely illegal in your country, or at the very least it'll be forbidden by your provider. 

The detailed answer to your question isn't suitable for instructables.

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orksecurity (author)2010-03-05

You can't.

Some cellphone companies can put multiple phones on a single account. I don't know of any which will put multiple phones on a single _number_, but you can probably set up forwarding so incoming calls go to a specific phone while either can make outgoing calls.

Talk to your provider. If they can't do it, talk to other providers.

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