Information and Communication Products
Mobile Phones
Service Manual S25 / S2588
V 1.0
ICP CD ST
R. Fleuren
Sm_S25_lvl2_v11
Page
29
of 35
06/99
8
Unblocking
If the phone is disabled due to a wrong entry of the phonecode (not PIN1, PIN2, network code
or service provider code!) it can only be resetted by entering the right unblocking code.
This unblocking code is derived from the IMEI number of the mobile and can only be
calculated in two different ways:
8.1
Siemens Hotline
You can retreive the code from our hotline personell in Germany.
If you need unblocking codes just send a fax with the IMEI numbers to:
Siemens AG
ICP CD SD CC
Bocholt, Germany
Fax: +49 2871 91 3007
Please use the appropriate form provided by your Siemens service coordinator.
8.2
Internet solution
As an alternative to the a.m. procedure, since november 1997 an internet solution is offered to
the LSO. It is a password protected internet homepage where you can enter the IMEI number
of the affected handset. The page will then present Master Phone Codes, Master Network
Codes and Master Service Provider Codes (if applicable to the relevant telephone).
If you do not have access to this tool up to now, please contact your Siemens service
manager for details.