Device And Sim Card Security; Restore Original Settings; Telephone Settings - Nokia E51 User Manual

Settings
Certificate management
•
certificates.
Security module — Manage your security module.
•
Avoid using codes that are similar to emergency numbers to
prevent accidental dialling of the emergency number. Codes
are shown as asterisks. When you change a code, enter the
current code, then the new code twice.

Device and SIM card security

To change the PIN code, select
code. The new code must be 4 to 8 digits long. The PIN code
protects your SIM card against unauthorised use and is
provided with the SIM card. After three consecutive incorrect
PIN code entries, the code is blocked, and you need to use the
PUK code to unblock it before you can use the SIM card again.
To set the keypad to lock automatically after a defined period,
select Phone and SIM card
To set a time-out after which the device is automatically
locked and can be used only if the correct lock code is entered,
select Phone and SIM card
a number for the time-out in minutes, or select
off the autolock period. When the device is locked, you can
still answer incoming calls, and calls may still be possible to
the official emergency number programmed into your
device.
To set a new lock code, select
code. The preset lock code is 12345. Enter the current code
and then the new code twice. The new code can be 4-255
characters long. Both alphabets and digits can be used, and
120
— Manage your security
Phone and SIM card
Keypad autolock period.
>
Phone autolock period. Enter
>
None
Phone and SIM card
both uppercase and lowercase alphabets are possible. The
device notifies you if the lock code is not properly formatted.
To set the device to ask for the lock code when an unknown,
new SIM card is inserted into your device, select
SIM card Lock if SIM card
>
a list of SIM cards that are recognised as the owners cards.

Restore original settings

PIN
> To restore the original device settings, select
settings. To do this, you need your device lock code. After
resetting, the device may take a longer time to power on.
Documents, contact information, calendar entries, and files
are unaffected.

Telephone settings

Select Menu
Select from the following:
to set
Call — Define general call settings.
•
Call divert
•
divert", p. 39.
Call barring
•
barring", p. 39.
Network
•
Lock
>
changed. The device maintains
Tools Settings > Phone.
> >
— Define your call divert settings.
— Define your call barring settings.
— Adjust the network settings.
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Phone and
Factory
See "Call
See "Call