If you key in
an incorrect PIN code several times, the phone may
display PIN code blocked and will then ask you to
key in the PUK code. Contact your service provider
to get the PUK code.
You
may need to...
...
contact your service provider to get some of the
access codes.
To adjust the security settings of your Nokia 8910i, press
Menu, select Settings and Security
settings.
Select:
PIN code request to set the phone to ask
for your PIN (Personal Identification Number) code
every time the phone is switched on. The PIN and PIN2
codes protect your SIM card against unauthorized use.
The codes are usually supplied with the SIM card.
Some SIM cards do not allow the PIN code request to
be turned off.
Call barring service (network service)
to restrict incoming calls to and outgoing calls from
your phone. You can obtain the barring password from
your service provider.
Fixed dialing to restrict your outgoing
calls to selected phone numbers if this function is
supported by your SIM card. The PIN2 code is required.
It may be supplied with the SIM card.
Closed user group. Closed user group is
a network service that specifies a group of people
whom you can call and who can call you. For more information,
contact your network operator or service provider.
Security level. Select Phone and the phone
will ask for the security code whenever a new SIM
card is inserted into the phone. Select Memory and
the phone will ask for the security code whenever
you want to select the phone’s internal memory
or to copy from one memory to another. Note that the
selected memory has to be the SIM card memory.
Change of access codes and you can change
the security code, the PIN code, the PIN2 code or
the barring password. Codes can only include numbers
from 0 to 9. Note that you should avoid using access
codes similar to emergency numbers, such as 112, to
prevent accidental dialing of an emergency number.
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you know... 
You
may need to... 
