Tools

Certificate management

Digital certificates do not guarantee safety; they are used to verify the origin of software.

Glossary: Digital certificates are used to verify the origin of the XHTML or WML pages and installed software. However, they can only be trusted if the origin of the certificate is known to be authentic.

In the certificate management main view, you can see a list of authority certificates that are stored in your device. Scroll right to see a list of personal certificates, if available.

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 device display if the identity of the server is not authentic or if you do not have the correct security certificate in your device.

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. 106.

•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

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Copyright © 2005 Nokia. All rights reserved.

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Nokia N91 manual Certificate management, View certificate details-check authenticity, Change the trust settings
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N91 specifications

The Nokia N91, launched in 2005, marked a significant milestone in the evolution of mobile phones, particularly as a music-centric device. Positioned as a multimedia smartphone, the N91 was tailored for music enthusiasts and boasted an array of features that set it apart from its contemporaries.

One of the standout characteristics of the Nokia N91 was its impressive storage capacity. It came equipped with an internal hard drive, offering 4GB of storage—an astounding amount for its time. This allowed users to store a substantial library of songs, making it one of the first phones to integrate such extensive media storage into its design.

The N91 featured a robust media player capable of handling various audio formats, including MP3, AAC, and MPEG-4. The user interface was designed to facilitate easy navigation through song libraries and playlists, catering to users who desired quick access to their favorite tracks. It also supported playlists and allowed for easy synchronization with a PC, enhancing the user experience.

In terms of connectivity, the Nokia N91 supported Wi-Fi and 3G networks, providing fast data access for downloading music and streaming content. The inclusion of Bluetooth technology was another highlight, allowing users to connect wireless headphones or speakers with ease. These features made the N91 not just a phone but a fully-fledged portable media player.

The device featured a striking design, with a metallic finish and a sleek form factor that appealed to style-conscious consumers. The 2.4-inch TFT display was optimal for viewing album art and managing playlists. Additionally, the N91 included a dedicated music control interface with physical buttons, making it convenient for users to control playback without having to navigate through menus.

On the photography front, the Nokia N91 had a 2-megapixel camera, a respectable feature for the time, allowing users to capture memories alongside their music experiences.

With its robust battery life and features tailored for music consumption, the Nokia N91 paved the way for future smartphones, blending phone capabilities with a rich multimedia experience. It remains a notable device in Nokia's legacy, representing an era where mobile phones began to transition into multifunctional gadgets that catered to a range of user needs beyond communication.
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