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3
• Lock if SIM changed
phone to request the lock code if a new,
unrecognised SIM card is inserted.
• Fixed dialling
outgoing calls to certain phone numbers only
(always including the number of emergency
services). To add numbers to this list, press
Options
Contacts.
Note:
Not all SIM cards support fixed dialling,
so this setting may not be available on your
phone.
• Closed user group
restricts both incoming and outgoing calls to a
limited group of phone numbers (always
including the number of emergency services).
Contact your service provider for more details.
• Confirm SIM services
confirmation message on screen when you are
using a SIM card service, or
messages.
!
To lock your phone
•
Press the
power
from the list of options displayed.
!
To unlock your phone
•
Key in your 5-digit lock code, using the numeric
keypad.
- Select
Yes
if you want the
- This allows you to restrict
and select
New contact
or
- This is a network service that
- Select
Yes
to display a
No
to disable these
key
and select
Lock phone
Certif. management
When you select
Security
settings, a list of authority certificates is
displayed (if there are any on your phone). An
authority certificate may have come from a web site
that you have browsed to, or from software that you
have installed on the phone. These certificates are
Add from
used to verify the source of the web site or software
concerned.
Warning:
reduces security risks when accessing web
content or installing software, the existence of a
certificate in itself does not guarantee complete
security. All certificates should be checked for
authenticity before being trusted.
!
To authenticate a certificate
•
Use the joypad to highlight the required
certificate, and select
Options
feature will check the validity of the certificate,
and may display one of the following warning
notes:
Warning
Certificate not
trusted
Expired
certificate
Certificate not
valid yet
Certificate
corrupted
48
Certif. management
from the
Although the use of certificates
Certificate details
menu. The Certificate Management
Explanation
You have not set any features to use the
certificate.
The validity period for the certificate has
expired.
The validity period for the certificate has
not yet begun.
The certificate is not correct and cannot be
used. Contact the certificate issuer.
Sendo X User Guide
from the
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