SIM card features obtained in the program

 

The full name of imsi is the International Mobile Subscriber identification number, that is, the customer identification code. After the mobile phone is turned on, there is a registration process during the network access process. At this time, a customer number (customer phone number) and customer identification number (imsi) will be allocated to access the network, the system uses the control channel to encrypt AlgorithmThe parameter group is sent to the customer. After the SIM card in the mobile phone receives the parameter, it is compared with the customer authentication parameter stored in the SIM card after the same algorithm. If the result is the same, access is allowed. Otherwise, the access is illegal, the Network rejects the service for this customer.

Obtain imsi on s60Code:
Ctelephony telephony = ctelephony: newl ();
Trequeststatus status;
Ctelephony: tsubscriberidv1 subscriberid;
Ctelephony: tsubscriberidv1pckg subscriberidpckg (subscriberid );
Telephony-> getsubscriberid (status, subscriberidpckg ));
User: waitforrequest (Status );
User: leaveiferror (Status );
Tptrc theimsi (subscriberid. isubscriberid );