OPERATING INSTRUCTIONS
MCUK990801C8
Section 3
Issue 1
Service Manual
– 13 –
Revision 0
3.12Security Codes
3.13SIM Personalisation
3.13.1 Introduction
SIM personalisation will limit the use of GD90 to a single SIM, a SIM supplied by one Network/Sub-network/Service Provider
or a SIM purchased by a company (corporation). If a personalised GD90 contains a SIM that is from a different source it will
display the message “SIM ERROR” when switched on. This personalisation of GD90 is sometimes referred to as SIM lock or
SIM latch.
3.13.2 Testing
To test a personalised GD90, when the user has not supplied the SIM, a SIM configured for test purposes (e.g. test SIM or soft
SIM) should be used. The mobile will recognise that the SIM is for testing purposes only and operate as normal.
3.13.3 Personalisation Function
Personalisation is activated during manufacture and then enabled at a later stage. Enabling/disabling is available by entering
a special key sequence immediately after power on. Once the enable/disable menu is shown it is possible to select the type of
personalisation. When personalisation is enabled it is only possible to disable it if the mobile contains an illegal SIM and the
sixteen digit Control Key (CK) is known. When enabled the CK is withheld from the user and cannot be read, for security
reasons.
There are two special key sequences to enter the enable/disable menu:
Key sequence
Notes
7
4
6
B
B
Can only disable personalisation.
5
2
8
2
4
B
B
Can both enable and disable personalisation.
3.13.4 Disabling Procedure
1.
F
7
4
6
B
B
or
5
2
8
2
4
B
B
.
2.
F
e
to point at:
“SIM” for SIM Personalisation
”Network” for Network Personalisation
“Subnetwork” for Subnetwork Personalisation
”SP” for Service Provider Personalisation or
”Corporate” for Company Personalisation.
3.
F
B
.
4.
F
the 16 digit Control Key.
5.
F
B
.
6.
F
the 16 digit Control Key.
7.
F
B
.
The display will confirm which type of Personalisation has been disabled.
Code Type
Number of Digits
Description
Personal Identification Number (PIN)
4 to 8
Controls SIM security. Supplied by the service provider.
PIN 2
4 to 8
Controls memory security. Supplied by the service provider.
PIN/PIN 2 Unblocking Key
(PUK/PUK 2)
8
Used to unblock PIN and PIN 2. A PIN or PIN 2 will become blocked if the
wrong PIN or PIN 2 is entered three times. When the blocked PIN or PIN 2
is unblocked, a new PIN or PIN 2 must be entered. If the wrong PUK or
PUK 2 is entered 10 times, your SIM will be unusable.
Supplied by the service provider.
Password
4
Controls the call bar function. If the wrong password is entered three
times, this service will be revoked. Supplied by the service provider.
Lock Code
4
Controls telephone security.
Factory set to “0000”.
