Nokia N90 User Manual

Tools
110
Options in the certificate management main view
are Certificate details, Delete, Trust settings,
Mark/Unmark, Help, and Exit.
Digital certificates should be used if you want to connect
to an online bank or another site or remote server for
actions that involve transferring confidential information.
They should also be used if you want to reduce the risk of
viruses or other malicious software and be sure of the
authenticity of software when downloading and installing
software.
Important: Even if the use of certificates makes
the risks involved in remote connections and
software installation considerably smaller, they
must be used correctly in order to benefit from
increased security. The existence of a certificate
does not offer any protection by itself; the
certificate manager must contain correct,
authentic, or trusted certificates for increased
security to be available. Certificates have a
restricted lifetime. If Expired certificate or
Certificate not valid yet is shown even if the
certificate should be valid, check that the current
date and time in your device are correct.
View certificate details—check authenticity
You can only be sure of the correct identity of a server
when the signature and the period of validity of a server
certificate have been checked.
You are notified on the phone display if the identity of the
server is not authentic or if you do not have the correct
security certificate in your phone.
To check certificate details, scroll to a certificate, and
select Options > Certificate details. When you open
certificate details, the validity of the certificate is checked,
and one of the following notes may be displayed:
• Certificate not trusted—You have not set any
application to use the certificate. See "Change the trust
settings", p. 110.
• Expired certificate—The period of validity has ended
for the selected certificate.
• Certificate not valid yet—The period of validity has
not yet begun for the selected certificate.
• Certificate corrupted—The certificate cannot be used.
Contact the certificate issuer.
Change the trust settings
Before changing any certificate settings, you must make
sure that you really trust the owner of the certificate and
that the certificate really belongs to the listed owner.
9239225_N90_2_en.book Page 110 Tuesday, July 19, 2005 4:03 PM

Nokia N90 Specifications

General

FM radio	No
Rear camera type	Single camera
Rear camera resolution	1600 x 1200 pixels
Ringer type	Polyphonic
2G standards	GPRS
Internal memory	31 MB
Multimedia Messaging Service (MMS)	Multimedia Messaging Service (MMS) is a standard way to send messages that include multimedia content to and from a mobile phone over a cellular network
Talk time (2G)	3 h
Battery capacity	760 mAh
Standby time (2G)	288 h
Display diagonal	2.1 \
Display resolution	352 x 416 pixels
Display number of colors	262144 colors
Product color	Silver

Weight and Dimensions

Depth	51 mm
Width	112 mm
Height	24 mm
Weight	173 g