A Mobile Station International Subscriber Directory Number (MSISDN) is a number used for the international identification of mobile phone numbers. The number also includes the country code and a national destination code characterizing the subscriber’s operator, which is usually used to track calls to...
Consider this, if your mobile phone gets stolen or you lost your mobile phone, you can still keep your MSISDN by using a new SIM. MSISDN is only tied to the IMSI at the point when the account is active in the system, and the IMSI can be changed as and when required, whereas the M...