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6 Preparing Your Phone for Use
If your PIN is entered incorrectly three times in a row, the SIM card is
blocked. If this happens, you can unlock it by using your PUK (Personal
Unblocking Key code), which you also get from your operator.
Your T28 WORLD comes with a lithium battery. The battery is not charged
when you buy your phone, but there may be enough power to switch the
phone on. We recommend that you charge the battery up to three hours before
you use the phone for the first time.
Attaching the Battery to Your Phone
When to Charge the Battery
The battery that comes with your phone can be charged whenever you wish
without affecting its performance. You can also charge the battery when the
phone is off.
Toremindyouthatyouwillsoonneedtochargethebatteryorreplaceitwith
a charged one:
• an alarm signal (a short beep) sounds and the message
Attention! Battery low
appears in the display
• the indicator light on top of the phone starts flashing red
If you have an Ericsson-approved battery, you can check the remaining talk
and standby times in the Status menu by sliding the volume key upwards or
downwards in standby mode. You can move downwards in the menu by
pressing
d. The remaining standby and talk times depend on the type of
battery you use and your position in the network. Please note that these times
are approximate and you may have 20% less time than is shown in the display.
Note! The phone turns itself off when the battery can no longer power it
satisfactorily.
The Battery
• Place the battery on the back of the phone and push until you hear a click.
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