Verykool R13 - Manual (Page 11)

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the files not saved. If you don’t charge for a long
time, the phone will be powered off automatically.
When charging, the battery icon at the right upper
corner of the screen will appear in a dynamic rolling
manner. During the charging period, the battery,
mobile phone and charger will become hot, which is
a normal phenomenon.
Warning:
The stated charging temperature ranges from
0℃ to 40℃. Please do not use charging
equipment if the temperature exceeds the
range. Please do use the charger provided by
the supplier. Application of unauthorized
charger may trigger danger and breach the
mobile phone maintenance warranty.
1.1.3 Use of battery
In actual use, the standby time and talk time of the
mobile phone varies with the network status,
working environment and different using manners.
1.2 SIM card
Your network operator will provide you a SIM card
which is the key for your access to the digital GSM
network. Prior to use the phone, you need to
insert effective SIM card in the mobile phone.
All relevant information concerning network
connection will be recorded in the SIM card. SIM
card can be removed from your mobile phone and
be used in any other GSM mobile phone (new
mobile phone automatically read SIM card).
In order to prevent loss and damage to the
information in the card, you should avoid touching
the metal area and keep it away from electricity
and magnetic places. Once SIM card is damaged,
you will not be registered to the GSM network.
Warning:
You must power off the mobile phone before