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What
is an IMEI number?
The GSM MoU's IMEI
(International Mobile Equipment Identity) numbering system is a 15
digit unqiue code that is used to identify the GSM/DCS/PCS
phone to a GSM/DCS/PCS network.
When a phone is switched on, this unique IMEI number is transmitted and
checked against a database of blacklisted or greylisted phones in the
network's EIR (Equipment ID Register).
This EIR determines whether the phone can log onto the network to make
and receive calls.
How to display a phone's IMEI
number:
- Type *#06# on the keypad.
This code works on most phones.
What effect does a listing of
an IEMI number with an EIR have?
If the EIR and IMEI
numbers match, the networks can do a number of things. They can for
example greylist or blacklist a phone:
- Greylisting will
allow the phone to be used, but it can be tracked to see who has it
(via the SIM info).
- Blacklisting
bars the phone from being used on any
network where there is an EIR match.
IEMI Example:
490154100837810
| 490154 |
Type Approval Code
(TAC)
The first two digits is the code for the country apporval. |
- 10
- Final Assembly Code (FAC)
| 01,02 |
AEG |
| 07
, 40 |
Motorola |
| 10,
20 |
Nokia |
| 30 |
Ericsson |
| 40,
41, 44 |
Siemens |
| 47 |
Option
International |
| 50 |
Bosch |
| 51 |
Sony |
| 51 |
Siemens |
| 51 |
Ericsson |
| 60 |
Alcatel |
| 70 |
Sagem |
| 75 |
Dancall |
| 80 |
Philips |
| 85 |
Panasonic |
083781
- Phone Serial Number
- 0
- Additional Number
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