Unlocking Iphone 4S to use any sim card?

I bought an iphone 4s from ebay. I don't have a sim card or any paper work.
how can i unblock it. The shop asked for a receipt or contract paper.
it was contracted to 3.

Jailbreak it… Unlock via app from cydia

As far as I know some specialised shops that unlock phones. You might also be able to unlock directly from a 3 shop however it will probably cost more.

Not possible

Hi, You can try to unlock your iPhone 4S from any reliable online site. There are loads of them. You can choose one among them. For example you can get the remote unlocking service for your iPhone 4S from http://www.unlock-zone.com/apple-iphone-4s/rs16wp9/ I found this method of unlocking to be safe, simple, affordable and quick. This method of unlocking also doesn't require jailbreaking. You will be guided with easy step by step unlocking instructions too. All the best mate.

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