Nokia 6210 Navigator

Page 65
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65
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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.
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.
Java applications may attempt to, for example, establish a data connection or 
send a message. To edit the permissions of an installed Java application and define 
which access point the application will use, select 
Installed apps.
, scroll to the 
application, and select 
Open
.
After you install applications to a compatible memory card, installation files (.sis) remain in 
the device memory. The files may use large amounts of memory and prevent you from 
storing other files. To maintain sufficient memory, use Nokia PC Suite to back up installation 
files to a compatible PC, then use the file manager to remove the installation files from the 
device memory. See “File manager,” p. 65. If the .sis file is a message attachment, delete the 
message from the Messaging inbox.
Remove an application
In the Application manager main view, select 
Installed apps.
, scroll to the software 
package, and select 
Options
> 
Uninstall
.
■ File manager
To browse, open, and manage files and folders in the device memory or on a 
memory card, select 
> 
Office
> 
File mgr.
.
Back up and restore device memory
To back up information from device memory to the memory card or restore 
information from the memory card, in File manager, select 
Options
> 
Back up 
phone memory
 or 
Restore from mem. card
. You can only back up the device 
memory and restore it to the same device.
Format a memory card
When a memory card is formatted, all data on the card is permanently lost. Some 
memory cards are supplied preformatted and others require formatting.
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