What Is A Sim Card; How To Charge The Battery - Zte S521 Manual

What is a SIM card?

Every mobile phone has a SIM card (Subscriber Identity Module). This
is a micro-chip that holds your personal information such as names
and phone numbers. Your phone won't work without it. If you already
have contacts on your SIM card, they can be transferred in most
cases.

How to charge the battery

Your phone is powered by a rechargeable battery. For maximum
battery performance, it is recommended that you first use up the
battery power and then charge it completely. A new battery's full
performance is achieved only after three complete charge and
discharge cycles.
 Connect your travel adapter to the side of your mobile phone as
shown in the diagram.
Note: The side with arrow should be upright while connecting.
 Connect the other end of the travel adapter to the mains
socket.
 If you charge the battery when the phone is switched off, the
battery indicator appears with the bars moving from right to left.
If you charge the battery when the phone is switched on, the
battery indicator appears with a lightning bolt.
 When the battery is fully charged, disconnect the charger.
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