Nokia E55 Nokia E55 User Guide in US English - Page 126
Certificate manager, View certificate details
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Security and data management When security features that restrict calls are in use (such as call barring, closed user group, and fixed dialling), calls may be possible to the official emergency number programmed into your device. Call barring and call diverting cannot be active at the same time. You need your PIN2 code to activate and deactivate fixed dialling or edit your fixed dialling contacts. Contact your service provider for your PIN2 code. Select Options and from the following: • Activate fixed dialling - Activate the fixed dialing. • Deactivate fixed dialling - Deactivate the fixed dialing. • New SIM contact - Enter the contact name and phone number to which calls are allowed. • Add from Contacts - Copy a contact from the list of contacts to the fixed dialling list. To send text messages to the SIM contacts while the fixed dialling service is active, you need to add the text message centre number to the fixed dialling list. Certificate manager receipt, it is checked through an authority certificate stored in your device. You receive notification if the identity of the server is not authentic or if you do not have the correct certificate in your device. You can download a certificate from a web site, or receive a certificate as a message. Certificates should be used when you connect to an online bank or a remote server to transfer confidential information. They should also be used if you want to reduce the risk of viruses or other malicious software, and to check the authenticity of software when you download and install software to your device. Tip: When you add a new certificate, check its authenticity. View certificate details You can only be sure of the correct identity of a server when the signature and the validity period of a server certificate have been checked. To view certificate details, open a certificate folder, and select a certificate and Options > Certificate details. One of the following notes may appear: Select Menu > Ctrl. panel > Settings and General > • Certificate not trusted - You have not set any Security > Certificate management. application to use the certificate. You may want to 126 Digital certificates are used to verify the origins of software but do not guarantee safety. There are four different types of certificates: authority certificates, personal certificates, trusted site certificates, and device certificates. During a secure connection, a server may send a server certificate to your device. Upon change the trust settings. • 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.