S I M s e r v i c e s

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.

There are three kinds of certificates: server certificates, authority certificates, and user certificates. You may receive these certificates from your service provider. Authority certificates and user certificates may also be saved in the security module by your service provider.

To view the list of the authority or user certificates downloaded to your phone, select Menu > Settings > Security > Authority certificates or User certificates. During a connection if the data transmission between the phone and the content server

is encrypted, is displayed.

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 create digital signatures with your phone if your SIM card has a security module. The digital signature is the same as signing your name to a paper bill, contract, or other document.

To create a digital signature, select a link on a page, for example, the title of the book you want to buy and its price. The text to be signed is shown and may include the amount and date.

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; do not enter any personal data (such as your signing PIN).

To sign the text, read all of the text first, and select Sign. The text may not fit within a single screen. Therefore, make sure to scroll through and read all of the text before signing.

Select the user certificate you want to use, and enter the signing PIN. The digital signature icon disappears, and the service may display a confirmation of your purchase.

18. SIM services

Your SIM card may provide additional services. You can access this menu only if it is supported by your SIM card. The name and contents of the menu depend on the available services.

For availability and information on using SIM card services, contact your SIM card vendor. This may be the service provider or other vendor.

© 2007 Nokia. All rights reserved.

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Nokia 3500 manual SIM services, Digital signature
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3500 specifications

The Nokia 3500 is a classic mobile phone that garnered attention for its simplicity and user-friendly features. Released in the mid-2000s, it captured the essence of early mobile technology, making it a beloved choice among consumers who valued reliability and straightforward functionality.

One of the standout features of the Nokia 3500 is its compact and lightweight design. Weighing in at just 81 grams, it easily fits into pockets and purses, making it highly portable. The phone features a 2-inch display with a resolution of 128 x 160 pixels, which, while modest by today’s standards, provided clear visuals for texts and basic graphics at the time of its launch.

The Nokia 3500 utilized GSM technology, supporting frequencies of 900 and 1800 MHz, which were standard for mobile communications in many regions. This ensured that users could enjoy reliable voice calls while benefiting from SMS functionalities that were becoming increasingly popular. The phone supported polyphonic ringtones, allowing users to customize their alerts, a feature that many enjoyed during the early days of mobile personalization.

In terms of battery life, the Nokia 3500 was equipped with a Lithium-ion battery that provided impressive longevity. Users could expect up to 3-4 hours of talk time and up to 400 hours of standby time, making it ideal for those who didn't want to worry about frequent recharging.

The device also included a basic camera with a resolution of 1.3 megapixels, enabling users to capture moments, albeit in limited quality by today’s standards. The camera offered features such as zoom and self-timer, which were exciting additions for mobile photography enthusiasts at the time.

Moreover, the Nokia 3500 supported various connectivity options, including GPRS for data transmission, enabling users to access mobile internet services, albeit at slower speeds compared to modern standards. The phone also featured Bluetooth technology, allowing for wireless communication with compatible devices.

In summary, the Nokia 3500 is remembered for its sturdy build, user-friendly interface, and essential mobile features that catered to a wide audience. It embodied the essence of early mobile phones, focusing on the primary functions of communication without the distractions of advanced multimedia capabilities that dominate today’s smartphones. The Nokia 3500 symbolizes a pivotal moment in mobile technology, evoking nostalgia for those who experienced its charm.
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