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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 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

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.

Scroll to an authority certificate, and select Options > Trust settings. Depending on the certificate, a list of the applications that can use the selected certificate is shown.

Symbian installation: Yes—The certificate is able to certify the origin of a new Symbian operating system application.

Internet: Yes—The certificate is able to certify servers.

App. installation: Yes—The certificate is able to certify the origin of a new JavaTM application.

Select Options > Edit trust setting to change the value.

Security module

To view or edit a security module (if available) in Secur. mod., select the module. To view detailed information about a security module, select the module and Options > Security details.

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Nokia N75 manual 106, Security module, View certificate details-check authenticity, Change the trust settings
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N75 specifications

The Nokia N75, launched in 2006, was part of Nokia's Nseries lineup, aimed at multimedia-savvy consumers. This clamshell smartphone stood out due to its balance of style, functionality, and advanced features for its time.

One of the key characteristics of the Nokia N75 was its design. The device featured a compact and elegant clamshell form factor that made it portable and easy to handle. It was available in several striking colors, adding a personal touch to its aesthetic appeal. The phone boasted a dual display, including a 2.4-inch main screen with a resolution of 240 x 320 pixels and a smaller external display that served essential functions like showing incoming calls and notifications.

In terms of multimedia capabilities, the N75 was impressive. It came equipped with a robust 2-megapixel camera that allowed users to capture decent-quality photos and videos. The device also supported multimedia playback, including MP3 music files, making it a perfect companion for music lovers. The dedicated music keys on the exterior enhanced the experience, enabling quick access to your favorite tracks.

Connectivity was another highlight of the Nokia N75. It supported 3G technology, which was relatively novel at the time, providing faster data transfer rates and enabling video calls. Additionally, the Nokia N75 featured Bluetooth and USB connectivity, allowing users to easily transfer files and connect to other devices. The inclusion of a built-in FM radio added to its entertainment options.

The N75 ran on the Symbian OS, specifically the S60 platform, which provided users with a degree of customization and access to various applications. Users could download a variety of apps, enhancing functionality beyond the built-in features.

Battery life was satisfactory for a smartphone of its kind, with a removable battery that ensured users could replace it easily. It offered around 3 to 4 hours of talk time and a standby time of up to a week, depending on usage.

Overall, the Nokia N75 was a well-rounded device that catered to users wanting a blend of communication, multimedia, and internet capabilities, setting a standard for future smartphones while retaining Nokia's reputation for quality and durability. Its combination of design, functionality, and technology made it a noteworthy device in the mid-2000s mobile landscape.
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