Spoofing my own Danish SIM card was how I first got the iPhone to work with a Danish carrier in later summer 2007. That was one of the first method used around the world to get the iPhone to work outside of the US. Before the software hacks (anySIM).
I needed to brute force the original SIM card to get a certain number needed to forge the new SIM card. Luckily the SIM card I needed the key from was old. Modern SIM cards can not be hacked that easily. I heard that the phone companies know that number and in some cases would tell that number to the customer owning the SIM card.
I needed to brute force the original SIM card to get a certain number needed to forge the new SIM card. Luckily the SIM card I needed the key from was old. Modern SIM cards can not be hacked that easily. I heard that the phone companies know that number and in some cases would tell that number to the customer owning the SIM card.