Nokia Lumia 800 User Manual page 82

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.
IMEI 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#.
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