Ericsson T28s - Manual (Page 7)

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6 Preparing Your Phone for Use
2. Raise the edge of the SIM card and slide it out.
The PIN
Most SIM cards are supplied with a security code, also known as PIN
(Personal Identity Number), which you need to access the network. Every
time you turn on your phone, you are asked to enter your PIN. You will find
your PIN in the information from your operator.
Some operators may have services that require a second PIN, your PIN2.
You should be careful with your PIN, since it is your protection against
unauthorized use of your subscription.
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 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.
To remind you that you will soon need to charge the battery or replace it with
a charged one:
• an alarm signal (a short beep) sounds and the message Attention! Battery low
appears in the display
The Battery
• Place the battery on the back of the phone and push until you hear a click.