Nokia E55 - Manual (Page 138)

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 Phone and SIM card > PIN
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 > Keypad autolock period .
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 > Phone autolock period . Enter
a number for the time-out in minutes, or select None to set
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
Phone and SIM card > Lock
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
both uppercase and lowercase alphabets are possible. The
device notifies you if the lock code is not properly formatted.
Restore original settings
To restore the original device settings, select Menu > Ctrl.
panel > Settings and General > Factory settings . To do
this, you need your device lock code. After resetting, the
device may take a longer time to switch on. Documents,
contact information, calendar entries, and files are
unaffected.
Positioning settings
Select Menu > Ctrl. panel > Settings and General >
Positioning .
To use a specific positioning method to detect the location of
your device, select Positioning methods .
To select a positioning server, select Positioning server .
To select which measurement system you want to use for
speeds and distances, select Notation preferences >
Measurement system .
To define in which format the coordinate information is
displayed in your device, select Notation preferences >
Coordinate format .
E-mail key settings
Select Menu > Ctrl. panel > Settings and General .
To select which mailbox to open with the e-mail key, select
E-mail key settings > E-mail key , and press the scroll key.
Telephone settings
Select Menu > Ctrl. panel > Settings and Phone .
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