User's Manual

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30
7 Appendix
Trouble shooting。
Questions Reasons Answers
Poor signal Using the mobile phone
in bad reception areas,
such as near the high
building or in the
basement, radio waves
can not convey effective.
Try to avoid
Use the phone in crowed
conversation time, and
line congestion may lead
to unable to talk
Try to avoid
Relevant with the
distance with the network
base station
Ask the network
service providers to
provide the services
regional map
Echo and
noise
Caused by the bad
network trunk lines, is a
regional problem.
Disconnect and
re-dial, or change a
better trunk line
Bad line in some areas
Standby
time
changed to
short
Relevant with the network
system settings
Please turn off the
phone while in bad
reception area
Need to change the
battery
Change to use a
battery
The phone will continue
to search the signal
while it can not receive
a signal, then will
spend a lot of battery
power and resulting in
shorter waiting time.
Please move to the
strong signal area or
turn off the phone.
Can not turn
on the
phone
Battery out of charge Check the power
level of the battery
or charge the
battery
SIM card
error
SIM card broken Contact with you
network provider
SIM card is not installed
properly
Make sure the SIM
card is installed