Nokia 6310i - Manual (Page 112)

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Manage phone security
• PUK CODES
The PUK (Personal Unblocking Key) and PUK2 codes are 4- to 8-digit
codes that also usually come from your service provider along with the
SIM card. The PUK code unblocks a blocked PIN code, and the PUK2 code
unblocks a blocked PIN2 code.
If you block your phone, you may need to contact your service provider.
When you enter the PUK code given by your service provider, the phone
will ask you to enter and then confirm a new PIN code.
• SECURITY CODE
Note: The default security code is 12345. You need the security
code to access some security features. When the phone requires
the security code, it displays
Security code:
Enter the code then press OK.
If you enter an incorrect security code five times in a row, the phone will
not accept the correct code for 5 minutes.
Change the security code
1 Press Menu 4-8-6 (Settings - Security settings - Change access
codes).
2 Scroll to Change security code and press Select.
3
Enter the current security code, then press OK.
4 Enter the new security code, then press OK.
5
Enter the security code again to verify, then press OK.
Important: Keep the code secret and in a safe place, separate
from the phone.