What is an IMSI number?
What is an IMSI number?
Unique number of up to 15 digits assigned to each GSM connection, containing country code, network operator code and mobile device number. See also HLR and IMEI.
Is the IMSI the phone number?
An international mobile subscriber identity (IMSI) number uniquely identifies a cellphone subscriber. It’s usually stored in a SIM card. A mobile subscriber integrated services digital network (MSISDN) number is a cellphone’s phone number. The IMSI is used internally within cellphone systems to identify a phone.
Where is IMSI information?
The IMSI is stored in the Subscriber Identity Module (SIM) inside the phone and is sent by the phone to the appropriate network.
Is IMSI and mobile number same?
IMSI stands for International Mobile Subscriber Identity and is a unique number assigned to the SIM card used by the mobile device. The IMEI number is linked to the mobile device (e.g. your smartphone) while IMSI is linked to the mobile network (i.e. your SIM – Subscriber Identity Module).
How do I find my SIM card IMSI number?
Finding the SIM number in Settings
- Open your Apps list and tap on Settings. Scroll to the bottom of the menu and press About.
- Tap Status. On some phones like HTCs, this may be called ‘Phone Identity’.
- Tap IMEI Information.
- Your SIM number will show as either the ‘IMSI’ number, or the ‘ICCID number’.
How IMSI is coded?
An IMSI is usually presented as a 15-digit number but can be shorter. The first 3 digits represent the mobile country code (MCC), which is followed by the mobile network code (MNC), either 2-digit (European standard) or 3-digit (North American standard).
How do I find my SIM IMSI number?
What is SIM number and IMSI number?
The ICCID (Integrated Circuit Card ID) is an 18- or 19-digit identification number used to identify the SIM itself. The IMSI (International Mobile Subscriber Identity) is a code used by the phone company to identify the SIM on the mobile network. It is stored as a 64 bit field and is sent by the phone to the network.
What do you need to know about the IMSI number?
If what you need is to call or send a message to a second person, the IMSI will not help you much. Remember that the IMSI is a number that network operators use to identify a subscriber. On the other hand, what you need to make a call is the MSISDN number. MSISDN stands for Mobile Station Integrated Services Digital Network.
What does IMSI stand for in ITU-T?
NOTE: This IMSI is the concept referred to by ITU-T as “International Mobile Subscription Identity”. In order to support the subscriber identity confidentiality service the VLRs, SGSNs and MME may allocate Temporary Mobile Subscriber Identities (TMSI) to visiting mobile subscribers.
Can a Mme correlate the IMSI of a TMSI?
The VLR,SGSN and MME must be capable of correlating an allocated TMSI with the IMSI of the MS to which it is allocated. An MS may be allocated three TMSIs, one for services provided through the MSC, one for services provided through the SGSN (P-TMSI for short) and one for the services provided via the MME (M-TMSI part GUTI for short).
How is a temporary logical Linkt identity ( tlli ) created?
For addressing on resources used for GPRS, a Temporary Logical Linkt Identity (TLLI) is used. The TLLI to use is built by the MS either on the basis of the P-TIMSI (local or foreign TLLI), or directly (random TLLI). In order to speed up the search for subscriber data in the VLR a supplementary Local Mobile Station Identity (LMSI) is defined.