![]() That is also the algorithm of most phones in the market. Currently, only the COMP128v1 version of SIM cards is allowed to be duplicated. SIM cards are manufactured based on 3 algorithms, COMP128v1, COMP128v2, and COMP128v3. Then, which SIM cards are cloneable? Not all SIM cards are able to be cloned. Since the operator authentication on the SIM card is based on these values, it allows you to fool the operators into thinking the cloned SIM card is the original one. ![]() By extracting these 2 secret codes from the SIM can and programming them into a new blank SIM card, you are able to clone a SIM card. Just as mentioned above, clone the SIM card is to copy the IMSI and Ki codes of the SIM cards.
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