Pin Codes; Call Barring; Screen Calibration - Nokia 7710 User Manual

Lock if SIM card changed:
ask for the lock code when an unknown, new SIM card is
inserted into your smartphone. The smartphone maintains
a list of SIM cards that are recognised as the owner's cards.

PIN codes

PIN code request: - When active, the code is requested each
time the smartphone is switched on. Deactivating the PIN
code request may not be allowed by some SIM cards. If you
enter the PIN code incorrectly three times in succession,
you will need a PUK (PIN Unblocking Key)
code to unblock the SIM card. When the SIM card is
blocked, you can only make calls to preprogrammed
emergency numbers. Otherwise, you cannot use the
smartphone before you enter the appropriate codes.
Note that this setting cannot be changed, if the phone is
switched off or if there is no valid SIM card inserted. Note
also that some SIM cards do not allow you to turn the PIN
code request off.
Confirm SIM services:
smartphone to display confirmation messages when you
are using a SIM card service.
PIN code: - The PIN code must be from 4 to 8 digits long.
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- You can set the smartphone to
(network service) - To set the
PIN2 code: -The PIN2 code must be from 4 to 8 digits long.
The PIN2 code is required to access some functions, such
as the call cost settings, which must be supported by your
SIM card. If you enter an incorrect PIN2 code three times
in succession, you will need a PUK2 code to unblock the
PIN2 code. The new PIN2 code must be from 4 to 8 digits
long.

Call barring

Barring password: - Tap Change
password. The barring password must be four digits long.
If you enter an incorrect password three times in
succession, the password is blocked and you must ask the
network service provider for a new password.

Screen calibration

Go to Desk > Control panel
If the touch sensitive area of the screen responds
inaccurately, it may need calibration. Follow the
instructions on the screen.
to change the barring
> Screen calibration.