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International Mobile Equipment Identification (IMEI)
The full name of IMEI Number is International Mobile Equipment Identification Number ie The International Mobile Equipment Identity. This is an identification number for mobile phone identification, which is different from any other device.
This number is also available in GSM, CDMA and IDEN and some satellite phones. Let me tell you that this number is 15 digits. Sometimes these numbers are also 16 and 17 digits. In this, the model of the mobile phone device, its location and the serial number of the mobile are written.
According to the information, 2 crore 50 lakh people use IMEI Number mobile phone in India.
How does IMEI Number work?
The IMEI number of any phone indicates the current location of that phone. This means that through this, it can be found where the phone of any person is being used.
If a person's phone is lost or stolen then the address of that phone can also be traced through the IMEI number. If someone does not know the IMEI number of his phone, then he can address it by dialing * # 06 # from his phone.
What are the benefits of IMEI number?
1. IMEI number is most used to catch criminals.
2. In the event of someone's phone being stolen, the thief can be caught with the help of this IMEI number.
How is an IMEI number formed?
The IMEI (15 digits: a check digit with 14 digits) or IMEISV (16 digits) contains information about the device's serial number, model, and manufacture. The structure of IMEI / SV is specified as 3GPP TS 23.003.
The model of the device bears the initial 8 digits of the IMEI / SV known as the "Type Allocation Code" (TAC). After which the serial number fixed by the company remains marked. A "Luhn check digit" is inserted at the end of the IMEI, which is determined by the "LuhnAlgorithim" calculation system according to the IMEI allocation and approval guidelines.
For example, the IMEI number prescribed for a mobile is 490154203237518, then the first 8 digits ie 49015420 is the "Type Allocation Code" (TAC) while the subsequent 6 digits ie 323751 is the serial number set by the manufacturer, while the last digit means 8 "Luhn" There is a Luhn checksum.
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When someone has their mobile equipment stolen or lost, they can ask their service provider to block the phone from their network, and the operator does so if required by law. If the local operator maintains an Equipment Identity Register (EIR), it adds the device IMEI to it. Optionally, it also adds the IMEI to shared registries, such as the Central Equipment Identity Register (CEIR), which blocklists the device with other operators that use the CEIR. This blocklisting makes the device unusable on any operator that uses the CEIR, which makes mobile equipment theft pointless, except for parts.
To make blocklisting effective, the IMEI number is supposed to be difficult to change. However, a phone's IMEI may be easy to change with special tools. In addition, IMEI is an un-authenticated mobile identifier (as opposed to IMSI, which is routinely authenticated by home and serving mobile networks.) Using a spoofed IMEI can thwart some efforts to track handsets, or target handsets for lawful intercept.
Australia was the first nation to implement IMEI blocking across all GSM networks, in 2003. In Australia the Electronic Information Exchange (EIE) Administration Node provides a blocked IMEI lookup service for Australian customers.
In the UK, a voluntary charter operated by the mobile networks ensures that any operator's blocklisting of a handset is communicated to the CEIR and subsequently to all other networks. This ensures that the handset is quickly unusable for calls, at most within 48 hours.
Some UK Police forces, including the Metropolitan Police Service, actively check IMEI numbers of phones found involved in crime.
In New Zealand the NZ Telecommunications Forum Inc provides a blocked IMEI lookup service for New Zealand consumers. The service allows up to three lookups per day and checks against a database that is updated daily by the three major mobile network operators. A blocked IMEI cannot be connected to any of these three operators.
In Latvia the SIA "Datorikas institūts DIVI" provides a blocked IMEI lookup service for checks against a database that is updated by all major mobile network operators in Latvia.
In some countries, such block listing is not customary. In 2012, major network companies in the United States, under government pressure, committed to introducing a block listing service, but it's not clear whether it will interoperate with the CEIR. GSM carriers AT&T and T-Mobile began blocking newly reported IMEIs in November 2012. Thefts reported prior to November 2012 were not added to the database. The CTIA refers users to websites at www.stolenphonechecker.org and the GSMA where consumers can check whether a smartphone has been reported as lost or stolen to its member carriers. The relationship between the former and any national or international IMEI block lists is unclear.
It is unclear whether local barring of IMEI has any positive effect, as it may result in international smuggling of stolen phones.