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Only use the authorized accessories and batteries and do not connect to incompatible products.
Waterproof
Your cellular phone is not waterproof. Please keep it away from water.
Backup
Remember to make a backup or keep a written record of all important information saved in your cellular
phone.
Connect to other devices
Please read the user manual of the device to get more detailed security instructions before connecting to
other devices and do not connect to an incompatible product.
SOS emergency calls
Make sure your cellular phone is switched on and in a service area. In idle mode, input the SOS number,
then press the Dial Key. Advise where you are and do not hang up without permission.
TROUBLESHOOTING
Common issue
Reason
Troubleshooting
Bad connection Using the cellular
phone in an area where
the network connection
is poor, such as around
a tower or basement
where a radio wave
cannot be sent
effectively.
Try to avoid.
Using the cellular
phone when the
network is busy, such
as an on-off duty time
or the line is busy.
Try to avoid.
Related to the distance
of the send basis of the
network.
Ask your operator to
provide a map of
your service area.
Aftersound or
cacophony
It is caused by the
network connection
and it is a regional
problem.
Hang up and redial
the number.
Network connection is
not good in some
areas.
Idle time
becomes short
Idle time is related to
network settings.
If the cellular phone
is in an area where
the network
connection is not
good, please
temporarily shut off
your phone.
Need to change
battery.
Insert a new battery.
When you cannot
receive signals, your
Please move to an
area where the
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