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ST55 Level 2 Service Manual
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10 International Mobile Equipment Identity, IMEI
The International Mobile Equipment Identity, IMEI, which consists of 15 digits, uniquely identifies
the mobile equipment.
IMEI=TAC+FAC+SNR+SP
IMEI: International Mobile Equipment Identity
TAC: 6 digits, indicating type approved
FAC: 2 digits, indicating final assembly plant
SNR: 6 digits, indicating equipment serial number for manufacturer
SP: 1digits, spare
The part number for the ST55 is
SXXXXX-SXXXX-AXXX
where the last 4 letters specify the
housing and software variant.
The IMEI starts with
351736
as ST55 model.
ST55 series IMEI label is accessible by removing the battery.
Re-use of IMEI label is possible by using a hair-dryer to remove the IMEI label.
On this IMEI label, Siemens has also includes the date code for production or service, which
conforms to the industrial standard DIN EN 60062. The date code comprises if 2 characters: first
character denotes the Year and the second character denotes the Month. For example, the IMEI
above show date code M3 mean 2001/03.
Year
Date code
Month
Date caode
2003 Q
December
D
2004 R
January
1
2005 S
February
2
Table: DIN EN 60062 DATE CODE
To display the IMEI number, exit code and SW/HW version, key: *#06#.
