BenQ S670C - Manual (Page 176)

160 Menus
Band Setting
According to your requirements, you can set an appropriate band
in the GSM network system.
Connection Mode
Used to set whether the phone will also search for a GPRS network
when it is turned on.
• GPRS & GSM: When it is turned on, the phone will search for
available GPRS and GSM networks.
• GSM Only: When it is turned on, the phone will search only for a
GSM network.
Security
You can use a PIN code, phone password, and SIM card lock
authentication to prevent unauthorized use of the phone.
PIN Code
A PIN (Personal Identification Number) code is a password
provided by a network operator. When PIN code authentication is
activated, it will prevent unauthorized use of the SIM card. Unless
the correct PIN code is entered when the phone is turned on, the
SIM card cannot be used, even if it is inserted in another phone.
PIN1 Code
Used to activate/deactivate or change the PIN1 code. Before
changing settings for the PIN1 code feature, the previously set
PIN1 code must be entered.
,
If the PIN code is entered incorrectly three consecutive times,
this will cause the SIM card to lock down, and a PUK1 code
provided by the network operator will be required to unlock it.
After unlocking, the PIN code will be automatically set to activate
once the phone is turned on.