Security Features - Mitsubishi Electric M21i User Manual

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To remove call barring or check its
status:
Press
. Select Settings.
1
Select GSM Services
2
3
Select Call barring
4
Scroll up
select the barring type to be
deactivated (Cancel) or
checked and follow the dis-
played instructions.
Call barring password
The call barring password is used to
select the call barring levels. It is sup-
plied via your service provider.
To change the password:
. Select Settings.
Press
1
Select GSM Services
2
Select Call barring
3
Select Change
4
password
First enter the former pass-
word then enter the new
password twice. A Confirma-
tion message is displayed.

Security features

The security features described in this
section protect your phone from unau-
thorised use.
When requested enter the code and
press OK
. Codes are displayed as
asterisks (*).
Press Clear
if you need to amend
your entry.
4
Avoid using codes similar to emergency numbers such
as 999 or 112 to prevent accidental dialling of these
numbers.
KEEP A RECORD OF YOUR CODES
AND KEEP THEM IN A SAFE PLACE.
Phone lock code
A phone lock code is supplied with
the phone for security purposes. It
prevents unauthorised access to the
phone.
.
.
or down
to
.
.
.
The default code is 0000. We sug-
gest that you change this code and
keep the new one in a safe place.
Once this feature is activated the
code is asked each time the phone is
turned on.
To change the phone lock code:
Press
. Select Settings.
1
2
Select Security
3
Select Phone lock change
and follow the instruc-
tions displayed.
Press OK
to validate the
4
new code.
To activate / deactivate the phone
lock code,
Press
. Select Settings.
1
2
Select Security
3
Select Phone lock enable (if
the code was disabled) or
Phone lock disable (if the
code was enabled)
enter your Phone lock code.
4
Emergency calls can still be made when phone lock is
activated.
PIN code
Your SIM card was provided with a 4
to 8 digit PIN code as a protection
against unauthorised usage. When
enabled the PIN code is required each
time you turn your mobile on. If a
wrong PIN code is entered three times
in succession your SIM card is
blocked. The 8 digit PUK code is then
requested to unblock your phone.
Please contact your service provider
to get this code.
To activate the PIN protection:
. Select Settings.
Press
1
2
Select Security
3
Select PIN enable (if the
code was disabled) or PIN
disable (if the code was ena-
and enter your Pin
bled)
code
.
.
.
and
.
55

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