Nokia 5140I Cell Phone User Manual


 
131Copyright © 2005 Nokia. All rights reserved.
provider. Authority certificates and user certificates may also be saved in the
security module by the service provider.
To view the list of the authority or user certificates downloaded to your phone,
select Menu > Web > Settings > Security settings > Authority certificates or User
certificates.
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.
Digital signature
You can make digital signatures with your phone if your SIM card has a security
module. Using the digital signature can be the same as signing your name to a
paper bill, contract, or other document.
To make a digital signature, select a link on a page, for example, the title of a book
you want to buy and its price. The text to sign, which may include the price and
date, is shown.
Check that the header text is Read and that the digital signature icon is
shown.
If the digital signature icon does not appear, there is a security breach and you
should not enter any personal data such as your signing PIN.
To sign the text, read it all first and select Sign.