Nokia Lumia 800 User Guide - Page 18
Access codes, Lock code security - features
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18 Get started Switch the loudspeaker on or off during a call Select or . Access codes PIN or PIN2 code (4-8 digits) These protect your SIM card against unauthorized use or are required to access some features. You can set your phone to ask for the PIN code when you switch it on. If not supplied with your SIM card or you forget the codes, contact your service provider. PUK or PUK2 code If you type in the code incorrectly three times in a row, you need to unblock the code with the PUK or PUK2 code. These are required to unblock a PIN or PIN2 code. (8 digits) IMEI number (15 digits) If not supplied with your SIM card, contact your service provider. This is used to identify valid phones in the network. The number can also be used to block, for example, stolen phones.You may also need to give the number to Nokia Care services. To view your IMEI number, dial *#06#. Lock code (security This helps you protect your phone against unauthorized use. code) You can set your phone to ask for the lock code that you (min. 4 digits) define. Keep the code secret and in a safe place, separate from your phone. If you forget the code and your phone is locked, your phone will require service. Additional charges may apply, and all the personal data in your phone may be deleted. For more information, contact Nokia Care or your phone dealer. The personal unblocking key (PUK) code and the universal personal unblocking key (UPUK) code (8 digits) are required to change a blocked PIN code and UPIN code,