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1.8 General Precautions
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Mobile phone
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Please use the mobile phone under the temperature ranging from -10
℃
to 50
℃
with a humidity ranging from
35% to 85%.
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When using the mobile phone, keep as far as possible away from the general phone, TV
，
radio and office automatic
equipment so as to avoid affecting the normal performance of the equipment and the mobile phone.
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Battery
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The battery should be left in place where the sunlight shoots from indirect angles and the ventilation is good.
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The service life of the battery is limited. The service time of the battery is shortened with the frequent charging.
When it is of no effect to charge for several times, it only means that the battery is exhausted and the mobile phone
should be replaced with a new battery of the specified mode.
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DO NOT throw the old battery into the domestic rubbish. Dispose the exhausted battery according to provisions
specified by relevant authorities.
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Charger
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DO NOT charge the battery in the places where the sunlight shoots from right angles; the ambient temperature is
lower than -10
℃
or higher than 50
℃
; the place is damp or dusty or of too much vibration (failure may occur); the
location is near the electronic appliances, such as TV, radio etc.(image or sound may be probably affected)
2 Before Use
2.1 SIM card
Before using the mobile phone, you should insert the valid SIM card, which is the key for you to enter the GSN
network.
All the information related to the creation of the connection to the network and initial call records will be recorded in the
metal plane area of the SIM card as well as the names, telephone numbers and SMS stored in the phone book on the SIM
card. The SIM card can be taken out from your mobile phone and can be placed in any one of the GSM mobile phones for
use (the new mobile phone will read the SIM card automatically).
To prevent losing and damaging of the information in the SIM card, please DO NOT touch the metal plane area and the
SIM card should be kept far away from electromagnetism. Once the SIM card is damaged, you can not enter into the
GSM network.
*Note: Please do power off your mobile phone before pulling out the SIM card. It is forbidden to insert or pull out the
SIM card with the mobile phone connected to the external power supply; otherwise, the SIM card is most likely to be
damaged.
2.1.1 Insert and pull out the SIM card
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The SIM card is generally placed in a card. Before installation, take cautions to take out the SIM card.
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Power off your mobile phone and then remove the battery and other external power supply.
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Insert the SIM card into the SIM card slot.