IMSI stands for International Mobile Subscriber Identification Number, that is, customer identification code.When the phone is switched on after the process in the access network has a registration process, this time will be assigned a customer number (customer number) and customer identification number (IMSI) when the client requests access to the network, the system will be through the control channelThe encryption algorithm of parameters in the group sent to the customer, the mobile phone SIM card received parameters, and the SIM card memory of the client after authentication parameters by the same algorithm compared with the same results to allow access, otherwise illegal customers, the network refused toTo this end customer service.
Get IMSI code on the S60:
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);