Nokia E51 User Manual

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Security and data managementManage the data and software on your device, and take care of the securityof the device and its contents.Important: Your device can only support one antivirus application.Having more than one application with antivirus functionality could affectperformance and operation or cause the device to stop functioning.Lock the deviceImportant: If the device has been locked, enter the lock code toactivate the phone function. When the device is locked, calls may be possibleto the official emergency number. Making an emergency call in the offlineprofile or when the device is locked requires that the device recognize thenumber to be an official emergency number. It is advisable to change theprofile or unlock the device by entering the lock code before you make theemergency call.To prevent access to the contents of your device, lock the device in thestandby mode. Press the power key, select Lock phone, and enter your lockcode. The default lock code is 12345. To unlock, press the left selection key,enter your lock code, and press the scroll key.To change the lock code, select Menu > Tools > Settings > General >Security > Phone and SIM card > Lock code. Enter the old code and thenthe new code twice. The new code can be 4-255 characters long. Bothalphabets and digits can be used, and both uppercase and lowercasealphabets are possible.You can also lock the device remotely by sending a text message to thedevice. To enable remote locking and to define the text for the message,select Menu > Tools > Settings > General > Security > Phone andSIM card > Allow remote lock > Yes. Enter the remote lock message andconfirm the message. The message must be at least 5 characters long.Memory card securitySelect Menu > Tools > Memory.You can protect a memory card with a password to prevent unauthorisedaccess. To set a password, select Options > Set password. The passwordcan be up to 8 characters long and is case-sensitive. The password is storedin your device. You do not need to enter it again while you use the memorycard on the same device. If you use the memory card on another device, youare asked for the password. Not all memory cards support passwordprotection.To remove the memory card password, select Options > Removepassword. When you remove the password, the data on the memory cardis not protected against unauthorised use.To open a locked memory card, select Options > Unlock memory card.Enter the password.If you cannot recall the password to unlock a locked memory card, you mayreformat the card, in which case the card is unlocked and password removed.Formatting a memory card destroys all data stored on the card.Fixed diallingSelect Menu > Contacts > Options > SIM contacts > Fixed dialcontacts.With the fixed dialling service, you can restrict calls from your device tocertain phone numbers. Not all SIM cards support the fixed dialling service.Contact your service provider for more information.When fixed dialing is activated, calls may be possible to the officialemergency number programmed into your device.1. To restrict calls from your device, select Options > New SIM contactand enter the contact name and phone number to the list of numbers towhich calls are allowed, or select Add from Contacts to copy the contactfrom Contacts. To restrict calls by a country prefix, enter the country prefixin the list of numbers. All phone numbers to which calls are allowed muststart with this country prefix.2. Select Options > Activate fixed dialling. You need your PIN2 code toactivate and deactivate fixed dialling or edit your fixed dialling contacts.Contact your service provider if you do not have the code. To cancel theservice, select Options > Deactivate fixed dialling.Tip: To send text messages to the SIM contacts while the fixed diallingservice is active, you need to add the text message centre number tothe fixed dialling list.Certificate managerSelect Menu > Tools > Settings > General > Security > Certificatemanagement.Digital certificates are used to verify the origins of software but do notguarantee safety. There are three different types of certificates: authoritycertificates, personal certificates, and server certificates. During a secureconnection, a server may send a server certificate to your device. Uponreceipt, it is checked through an authority certificate stored on your device.You receive notification if the identity of the server is not authentic or if youdo not have the correct certificate in your device.Download a certificate from a web site, or receive a certificate as an e-mailattachment, or as a message sent through a Bluetooth or infraredconnection. Certificates should be used when you connect to an online bankor a remote server to transfer confidential information. They should also beused if you want to reduce the risk of viruses or other malicious software,and to check the authenticity of software when you download and installsoftware to your device.Tip: When you add a new certificate, check its authenticity.View certificate detailsYou can only be sure of the correct identity of a server when the signatureand the validity period of a server certificate have been checked.To view certificate details, select View details.One of the following notes may appear:• Certificate not trusted — You have not set any application to use thecertificate. You may want to change the trust settings.• Expired certificate — The period of validity has ended for the selectedcertificate.• Certificate not valid yet — The period of validity has not yet begun forthe selected certificate.• Certificate corrupted — The certificate cannot be used. Contact thecertificate issuer.Certificate trust settingsTrusting a certificate means that you authorise it to verify web pages, e-mailservers, software packages, and other data. Only trusted certificates can beused to verify services and software.Important: Even if the use of certificates makes the risks involved inremote connections and software installation considerably smaller, theymust be used correctly in order to benefit from increased security. Theexistence of a certificate does not offer any protection by itself; the certificatemanager must contain correct, authentic, or trusted certificates for increasedsecurity to be available. Certificates have a restricted lifetime. If "Expiredcertificate" or "Certificate not valid yet" is shown, even if the certificateshould be valid, check that the current date and time in your device arecorrect.To change the trust settings, select a certificate and Options > Trustsettings. Select an application field and press the scroll key to select Yes orNo. You cannot change the trust settings of a personal certificate.Depending on the certificate, a list of applications that can use the certificateis displayed:• Symbian installation — New Symbian operating system application.• Internet — E-mail and graphics.• App. installation — New Java™ application.• Online certif. check — Online certificate status protocol.Security modulesSelect Menu > Tools > Settings > General > Security > Securitymodule.View and edit security modulesTo view or edit a security module, scroll to it, and press the scroll key.To view detailed information about a security module, select Options >Security details.To edit the PIN codes for the security module, select Module PIN to edit thePIN code for the security module or Signing PIN to edit the PIN code fordigital signatures. You may not be able to change these codes for all securitymodules.The key store contains the contents of the security module. To delete the keystore, select Key store, select the desired key store, and Options >Delete. You may not be able to delete the key store of all security modules.37