20
buildings or basement, the radio
waves
cannot
effectively
communicate;
Using the mobile phone in the call
dense period, such as commute
time, line congestion caused by
the inability of the calls.
Try to avoid
Associated with the launch of the
base station network built near
and far
Can ask
Internet service
providers provides service
area map
Echo or noise
Due to poor network trunk,
is a regional problem
Hang up and redial, trunk
lines may replace good
one.
Some
regional
bad line
Standby
time shorter
Standby time is related to the
network system setting
Turn off the mobile phone
in the poor reception area.
The battery need to replaced,
please replace new battery.
Please replace new battery.
The phone will continue to search
base station, it will use a lot of
battery power, causing the
standby time become shorter.
Please move to strong signal
place or turn off the phone.
Unable to
boot
The
battery
power
is
exhausted.
Check the battery power or
charge it.
SIM card
error
SIM card is damaged
Contact
your
network
service supplier.
SIM card not installed
Make sure SIM Card has been
installed.
SIM card metal surface have
dirt
Use clean cloth to brush the
SIM card metal contact point