Nokia Lumia 920 User Manual page 105

You can set your phone to ask for the lock code
that you 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.
IMEI This is used to identify valid phones in the
network. You may also need to give the number
to Nokia Care services.
To view your IMEI number, dial *#06#.
105
© 2013 Nokia. All rights reserved.