Nokia 7110 Owner's Manual page 83

PIN2 code (4 to 8 digits)
The PIN2 code, supplied with some SIM
cards, is required to access some
functions, such as charging unit
counters. These functions are only
available if supported by your SIM card.
If you enter an incorrect PIN2 code
three times in a succession, you cannot
use the functions requiring the PIN2
code before entering the PUK2 code.
PUK code (8 digits)
The PUK (Personal Unblocking Key)
code is required to change a blocked
PIN code. The PUK code may be
supplied with the SIM card. If not,
contact your local service provider for
the code.
If you enter an incorrect PUK code ten
times in succession, the SIM card
becomes invalid. Contact your service
provider for a new card.
PUK2 code (8 digit)
The PUK2 code, supplied with some SIM
cards, is required to change a blocked
PIN2 code.
If you enter an incorrect PUK2 code ten
times in succession, you cannot use the
functions requiring the PIN2 code. To
use the functions, contact your service
provider for a new card.
Barring password
The barring password is needed for
using the
Call barring service
menu (4-5-2). Contact your service
provider for the password.
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