Nokia 6020 User Manual

137Copyright © 2005 Nokia. All rights reserved.
Certificates
There are three kinds of certificates: server certificates, authority certificates and
user certificates.
• The phone uses a server certificate to create a connection with improved
security to the content server. The phone receives the server certificate from
the service provider before the connection is established and its validity is
checked using the authority certificates saved in the phone. Server certificates
are not saved.
The security indicator is displayed during a connection if the data
transmission between the phone and the content server is encrypted.
The security icon does not indicate that the data transmission between the
gateway and the content server (or place where the requested resource is
stored) is secure. The service provider secures the data transmission between
the gateway and the content server.
• Authority certificates are used by some services, such as banking services, for
checking the validity of other certificates. Authority certificates can either be
saved in the security module by the service provider, or they can be
downloaded from the network, if the service supports the use of authority
certificates.
• User certificates are issued to users by a Certifying Authority. User certificates
are required, for example, to create a digital signature and they associate the
user with a specific private key in a security module.

Nokia 6020 Specifications

General

Display Type	TFT, 65K colors
Resolution	128 x 128 pixels
Camera	VGA
Battery Type	Removable Li-Ion 760 mAh battery (BL-5B)
Network Technology	GSM
2G bands	GSM 900 / 1800 / 1900
GPRS	Class 10
EDGE	Class 6
Status	Discontinued
SIM	Mini-SIM
5-way navigation key	Yes
Call records	10 dialed, 10 received, 10 missed calls
Video	Yes
Alert types	Vibration; Downloadable polyphonic ringtones
Loudspeaker	Yes
3.5mm jack	No
Bluetooth	No
Radio	No
USB	Pop-Port
Messaging	SMS, MMS, Email
Browser	WAP 2.0/xHTML
Java	Yes, MIDP 2.0
Predictive text input	Yes
Organizer	Yes
Infrared port	Yes
Stand-by	Up to 300 h
Display Size	1.5 inches
Dimensions	106 x 44 x 20 mm
Weight	90 g
Announced	2004
Phonebook	500 entries
Games	Yes
Colors	Silver
Talk time	Up to 3 h