Sony Ericsson K 500 Manual page 72

More features
To set the timer
} Organizer } Timer and enter the hours, minutes and
seconds after which you want the timer to go off.
Display light
The display light can be set to On, Off, Automatic or
Power save. Power save is the default setting for the
display light and is designed to optimize standby time.
Your screen is turned off completely a few seconds
after you last press a key. Press any key and the screen
turns on again.
In automatic mode, the display light is turned off
a few seconds after you last press a key.
To set the display light
} Settings } the Display tab } Light.
Start-up screen
When you turn your phone on or off, the Sony
Ericsson start-up screen appears. Your network
operator's own start-up screen may appear instead.
You can also set your own start-up screen.
To select a start-up screen
} Settings } the Display tab } Start-up screen and
select a file for the start-up screen.
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72
Calculator
The phone has a calculator, which can add, subtract,
divide and multiply.
To use the calculator
} Organizer }Calculator.
to select ÷ x - + . % =
• Press or
• Press to delete the figure.
• Press to enter a decimal point.
SIM card lock
The SIM card lock protects your subscription, but
not your phone itself, from unauthorized use. If you
change SIM cards, the phone still works with the new
SIM card.
Most SIM cards are locked at the time of purchase.
If the SIM card lock is on, you have to enter a PIN
(Personal Identity Number) every time you turn on
your phone.
If you enter your PIN incorrectly three times in a
row, the SIM card is blocked. This is indicated by
the message PIN blocked. To unblock it, you need
to enter your PUK (Personal Unblocking Key).
Your PIN and PUK are supplied by your network
operator. You can edit your PIN and select a new
four- to eight-digit PIN.