ToolsAfter three consecutive incorrect PIN code entries, thecode 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 andis supported by UMTS mobile phones.PIN2 code—This code (4 to 8 digits) is supplied with someSIM cards, and is required to access some functions in yourdevice.Lock code (also known as security code)—This code (5digits) can be used to lock the device to avoid unauthorizeduse. The factory setting for the lock code is 12345. Toavoid unauthorized use of your device, change the lockcode. Keep the new code secret and in a safe placeseparate from your device. If you forget the code, contactyour service provider.Personal unblocking key (PUK) code and PUK2 code—TheseCertificate managementDigital certificates do not guarantee safety; they are usedto verify the origin of software.In the certificate management main view, you can see alist 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 connectto an online bank or another site or remote server foractions that involve transferring confidential information.They should also be used if you want to reduce the risk ofviruses or other malicious software and be sure of theauthenticity of software when downloading and installingsoftware.Important: Even if the use of certificates makes therisks involved in remote connections and softwareinstallation considerably smaller, they must be used
