Smith's LND Dilemma

Smith's LND DilemmaIn real cases of mobile 'phone and SIM Card examination, as opposed to theoretical discussion about them, entries found in elementary file Last Number Dialled (EFLND) on a SIM Card can be quite complex to determine and today do not have a clearly defined pattern as to the origin of data, as one might think is suggested by the GSM Standard 11.11. This is largely due to