What is a "International Mobile Subscriber Identity"? The Most Authoritative Explanation.
What is a temporary mobile subscriber identity (TMSI)?
To prevent eavesdroppers from identifying and tracking the subscriber on the radio interface, the IMSI is sent as rarely as possible, and a randomly-generated Temporary Mobile Subscriber Identity (TMSI) is sent instead. The IMSI is used in any mobile network that interconnects with other networks.What is international mobile subscriber identity (IMSI)?
The international mobile subscriber identity ( IMSI; / ˈɪmziː /) is a number that uniquely identifies every user of a cellular network. It is stored as a 64-bit field and is sent by the mobile device to the network.How much does a mobile subscriber identity catcher cost?
The prices are pretty high. There were reports about International Mobile Subscriber Identity catcher being sold at $15,000. Most countries have requirements according to which such equipment can only be sold by a license to trusted companies and cannot be offered to private users and criminals.What is a Subscriber Identity Module (SIM)?
The Subscriber Identity Module (SIM) in the phone receives the IMSI from the handset, which is then transmitted to the correct network. The IMSI is used to look up mobile information in the Home Location Register or Visitor Location Register.
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