Clone Sim Card: Cloning SIM cards has always been something that most of people have thought of doing, but just don’t know how it can be done. Today I will show how to clone SIM card easily step by step. Gone are the days when mobile phones were only for the rich. Today, almost everyone owns a mobile phone and a huge percentage, apart from using it for browsing, uses it for calling and this obviously includes talking about all the confidential info we they may have over the phone. Little do they know that it’s a piece of cake to eavesdrop on them. Amazingly, this is possible by cloning their SIM card. In case you didn’t know, the subscriber identity Module (SIM) is the transmitter of signal to the mobile and tower. Our SIM cards also have two secret keys called IMSI value and KI value which enables the operator to know the mobile numbers authenticate the customer. These keys are related to our phone numbers and they are the ones that enable billing to be made to that specific customer.

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With that short insight, you should have probably figured out that the main goal in cloning SIM card is to get the KI and IMSI keys. These keys are the identifier of the SIM card and help to register the SIM card on the mobile network.

Cloning the SIM card definitely comes with great power. Much as you must always remember that its illegal. You can do quite a lot. Imagine spying on the victim, sending messages and making calls from a victim’s number and etc.

A major flaw with the GSM technology allows us to program the two keys extracted from the operator into a new blank smart card. The operator authentication on SIM is based on these keys and therefore it gives us chance to fool the operators into thinking that it’s the original SIM card.

clone sim

Much as cloning of the SIM is very much possible, not every SIM card can be cloned. Why? Well, SIM cards are made based on three algorithms. Namely, comp128V1, COMP128v2 and lastly COMP128v3. Amongst, these mentioned, only COMP128v1 SIM version can be cloned. You Can also gladly note that 70% of the SIM cards used today are actually COMP128v1.

To be able to clone you will need the following.

Blank Programmable SIM card.

A SIM Firmware reader/writer: Ebay|Amazon|Newegg

Download and install MagicSIM

Download and install USB SIM Card Reader

How to Clone Sim Card Easily?

Once you have all that then let the fun begin.

Step 1: First, we remove the SIM from the phone and place it in the card reader, click read from the card in magicSIM. Once its connected, select crack SIM in the toolbar.

magic sim

Step 2:  Secondly, click KI is found and the crack is finished, click file, save as and save your cracked SIM info to a file.

Step 3:  Third, click disconnect from the file menu or in order not to ruin your SIM card. This is important or else your beloved SIM will crack.

Step 4:  Fourth, once it says disconnected, retrieve the SIM and put it into your phone to check if it still works. It should work. If it doesn’t work then you probably did not unlock your SIM, or you tried to copy it rather than crack and save it.

Unlock SIM card

Go to phone tools, select SIM card, then select unlock SIM. This in turn will prompt for a code.

Call your network provider, they will ask for your number, account info, name and security code. They may as well ask why you want to unlock your SIM card. You can make something that you would like to unlock your SIM to get it to work with your overseas phone or make up any other excuse.

Once given the SIM unlock code, enter it and you will have unlocked the SIM successfully.

Step 5: Insert the SIM card and open USB SIM card reader software.

Data recovery sim card


Step 6: Click connect. It should say “no info found” if its indeed truly blank.

Step 7: Select write to SIM, it will prompt you to select a “.dat file”, select the one you saved earlier.

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Step 8: Now click start, it will take approximately 10 mins to write it. Once it is complete, it will ask for a security code, enter the security code that the network provider gave you and after click finish.

After completing all these steps without a problem, then You have successfully cloned a SIM card.

Remember, cloning of the SIM card is illegal and who knows what kind of punishment there is if you ever get caught. However, there are a few reminders you need to know before you go about playing around with the cloned SIM card. Remember, that, when somebody calls the victim, both mobiles will ring, same will happen in for the case of SMSs. Despite this fact, only one can pick up the call. Also, when you try to make two calls at the same time, one will connect while the other will fail. With that, I guess you know how to keep it together once you have cloned any SIM card. One last caution is to not do anything stupid that is noticeable by the network operator. You could be headed for jail if you are got.