29
Not setup correctly
check SIM
Filth on the SIM
Clean it with a cloth
The area is hard to
receive signal, such
as near a high
building
or
in
basement
Move to a better area
Bad signal
Communication
traffic
Try to avoid it
Can
not
power on
Battery used out
Change a battery
Can
not
make a call
Use barring dialing
function
Cancel barring dialing
function
SIM is invalid
Contact the operator
Out of GSM service
area
move into the service area
Can
not
connect
to
network
Bad signal
Try again in a better signal
area
The
voltage
is
unsuitable
Use the appointed standard
voltage
Non-standard
charger
Use the appointed charger
Can
not
charge
not contact well
Check whether the plugs
are well connected.
