The iPhone 4S can apparently be cracked using a crack card

  Over the weekend we talked about some decoding cards that appeared like "mushrooms after the rain" although the Dev Team did not officially recognize them. I told you then that those cards could decode our terminals without too much effort and in the last few days we received various confirmations of this. Several people managed to get hold of such cards and would have managed to decode iPhone 4S terminals with basebands from iOS 5, but I did not have the opportunity to test any of the several available models.

  TPP SIM, GPP SIM, R-SIM si REBEL TURBO SIM there are the 4 cards that are known to do decoding for iPhone 4S and I received confirmations for the last two. I don't recommend you to buy them yet, because I'm not 100% sure that they work without problems, but if there are people among you who have used them, then I would ask you to leave a comment with your experience.