ZEN S30, Manual

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Schedule power on/off, Language, Preferred input
methods,Display characteristic, greeting text, shortcuts,
dedicated key,Auto update of date and time , UART
setup,LCD backlight,delete isiamic home etc.
7.10.3
Network Settings
This feature is available to operate network settings when you
are roaming or travel outside. Access the menu you can select
the network manually or automatically.
Before use the network, you must contact your local service
provider or the roaming area before you use this function.
7.10.4
Security Settings
You can set the security settings to protect the phone or SIM
card from unauthorized use. The default security code is 0000.
－
SIM1 Security Settings
SIM1 Lock: Set the phone to ask for your PIN code each
time you start your phone (if this function is supported by your
SIM card).