If you forget any of these codes, contact your service provider.

Personal identification number (PIN) code—This code protects your SIM card against unauthorized use. The PIN code (4 to 8 digits) is usually supplied with the SIM card. After three consecutive incorrect PIN code entries, the code is blocked, and you need the PUK code to unblock it.

UPIN code—This code may be supplied with the USIM card. The USIM card is an enhanced version of the SIM card and is supported by UMTS mobile phones.

PIN2 code—This code (4 to 8 digits) is supplied with some SIM cards, and is required to access some functions in your device.

Lock code (also known as security code)—This code (5 digits) can be used to lock the device to avoid unauthorized use. The factory setting for the lock code is 12345. To avoid unauthorized use of your device, change the lock code. Keep the new code secret and in a safe place separate from your device. If you forget the code, contact your service provider.

Personal unblocking key (PUK) code and PUK2 code—These codes (8 digits) are required to change a blocked PIN code or PIN2 code, respectively. If the codes are not supplied with the SIM card, contact the network service provider whose SIM card is in your device.

UPUK code—This code (8 digits) is required to change a blocked UPIN code. If the code is not supplied with the USIM card, contact the network service provider whose USIM card is in your device.

Certificate management

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

In the certificate management main view, you can see a list of authority certificates that are stored in your device.

Press 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

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N92 specifications

The Nokia N92, released in early 2006, is a pioneering smartphone that exemplified Nokia's efforts to combine multimedia capabilities with mobile communication. As part of the Nseries, it catered to a segment of users who valued entertainment and connectivity in a single device. The N92 was particularly notable for its innovative flip design that enabled users to enjoy video content more comfortably.

One of the standout features of the Nokia N92 is its large 2.8-inch display, boasting a resolution of 240 x 320 pixels. This screen not only provided vibrant visuals for multimedia consumption but also facilitated easy navigation through its user-friendly interface. The device supported 262,144 colors, enhancing the clarity and detail of images and videos.

The multimedia capabilities of the N92 were impressive for its time. It was equipped with a built-in 2 megapixel camera capable of capturing photos and recording video. Additionally, the N92 came preloaded with a wide array of multimedia applications, including a music player that supported various file formats, making it an excellent choice for mobile entertainment. The addition of stereo speakers ensured a rich audio experience, further enhancing the functionality as a portable media device.

In terms of connectivity, the Nokia N92 featured GSM and WCDMA capabilities, allowing for high-speed data transfers. The device also incorporated Wi-Fi connectivity, enabling users to connect to the internet at available hotspots. This connectivity was complemented by support for Bluetooth, making it easy to share files and connect with other devices.

The N92 ran on the Symbian operating system, specifically the S60 platform, which offered users access to a range of applications and customizable features. With an impressive battery life, it empowered users to enjoy extended usage without frequent recharges—a critical factor for active users relying on their devices throughout the day.

Overall, the Nokia N92 demonstrated remarkable ingenuity in its design and feature set. As an early entrant in the multimedia smartphone segment, it laid the groundwork for future devices, showcasing the potential of integrating entertainment and communication. The N92's legacy remains a testament to Nokia's innovative spirit in the nascent eras of smartphone technology.
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