Another consideration: How easy is it to spoof a sim card? Someone might be trying to implicate the accused by duplicating their sim card and taking a phone with the duplicated sim card to every robbery they commit.
> Another consideration: How easy is it to spoof a sim card?
Spoof? No. You can clone a card if you get physical access to it and it uses the older COMP128v1 encryption as the key is just 56-bit to bruteforce. This allows you to use their IMSI.
You'd also need to spoof the IMEI of the target device, which can only be done easily on older phones (original iPhone with early baseband is one) or with custom built solutions (think SDR, hackrf stuff)
I am fairly certain most major US carriers are not using the old-style SIM card anymore for this very reason. To support 3G and later on LTE, the cards would have to be upgraded.
Spoof? No. You can clone a card if you get physical access to it and it uses the older COMP128v1 encryption as the key is just 56-bit to bruteforce. This allows you to use their IMSI.
You'd also need to spoof the IMEI of the target device, which can only be done easily on older phones (original iPhone with early baseband is one) or with custom built solutions (think SDR, hackrf stuff)
I am fairly certain most major US carriers are not using the old-style SIM card anymore for this very reason. To support 3G and later on LTE, the cards would have to be upgraded.