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Subscriber Identity Module (SIM) and Identification
64
International Mobile Station Equipment Identity (IMEI)
The International Mobile station Equipment Identity (IMEI) number is an
individual number unique to the PCB and stored within the phone's memory.
The IMEI uniquely identifies an individual mobile station provides a way to control
access to GSM networks based on mobile station types or individual phones. The
full IMEI structure is listed in Table 2.
Table 2. IMEI Number Breakdown
TAC
Serial Number
NNXXXXXX
ZZZZZZ
Where:
TAC
Type Allocation Code, formerly known as Type Approval Code
NN
Reporting body identifier
XXXXXX Type identifier
ZZZZZZ
Individual unit serial number
A
Phase 1 = 0.
Phase 2 = check digit defined as a function of all other IMEI digits
Other label number configurations present are:
• TRANSCEIVER NUMBER: Identifies the product type, usually the SWF
number. (for example, V100).
• PACKAGE NUMBER: Identifies the equipment type, mode, and language in
which the product is shipped.
March 06, 2006
Check Digit
A
U6 GSM
6809493A67-O
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