To Use The Calculator - Sony Ericsson Z1010 User Manual

More features
Display light
The display light can be set to automatic, off or on.
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
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
1
} Settings }
the
2
Select a file for the start-up screen.
Calculator
The phone has a calculator, which can add,
subtract, divide and multiply.

To use the calculator

• Press or to select
• Press to delete the figure.
• Press to enter a decimal point.
82
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}
tab Light.
Display } Start-up screen.
tab
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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
PIN blocked. To unblock it you
by the message
need to enter your PUK (Personal Unblocking
Key). Your PIN and PUK are supplied by your
network operator.
If the message Codes do not match
the new PIN incorrectly. If the message
appears, followed by Old PIN:
PIN incorrectly.
To unblock your SIM card
1
PIN blocked
is displayed.
2
Enter your PUK, OK.
3
Enter a new four- to eight-digit PIN, OK.
4
Re-enter the new PIN to confirm, OK.
appears, you entered
Wrong PIN
, you entered your old