TV system
— Select the analogue video signal
●
system that is compatible with your TV.
Flicker filter
— To improve image quality on the
●
screen of your TV, select On. The flicker filter may
not diminish image flicker on all TV screens.
Security settings
Phone and SIM
Press
, and select
Tools
Security
Phone and SIM
>
PIN code request
— When active, the code is
●
requested each time the device is switched on.
Deactivating the PIN code request may not be
allowed by some SIM cards.
PIN
code,
PIN2
code, and
●
change the lock code, PIN code, and PIN2 code.
These codes can only include the numbers from 0 to
9. If you forget any of these codes, contact your
service provider.
See "Access codes," p. 14.
Avoid using access codes similar to the emergency
numbers to prevent accidental dialling of the
emergency number.
Keypad autolock period
●
keypad is locked when your device has been idle for
a certain period of time.
Phone autolock period
●
use, you can set a time-out after which the device
automatically locks. A locked device cannot be used
Settings
General
>
>
card.
Lock code
— You can
— Select whether the
— To avoid unauthorised
until the correct lock code is entered. To turn off the
autolock period, select None.
Tip: To lock the device manually, press the
power key. A list of commands opens. Select
Lock
phone.
Lock keys if slide closed
●
keypad is locked when you close the 2-way slide.
Tip: To lock or unlock the keypad manually
when the slide is closed, press the left
>
selection key, then the right selection key.
Lock if SIM card changed
●
to ask for the lock code when an unknown SIM card
is inserted into your device. The device maintains a
list of SIM cards that are recognised as the owner's
cards.
Closed user group
●
people to whom you can call and who can call you
(network service).
Confirm SIM services
●
display confirmation messages when you are using
a SIM card service (network service).
Certificate management
Press
, and select
Security
Certificate
>
Digital certificates do not guarantee safety; they are
used to verify the origin of software.
— Select whether the
— You can set the device
— You can specify a group of
— You can set the device to
Tools
Settings
General
>
>
management.
>
135