This is related to the
distance to base
station in question.
You may ask the
network service
provider to provide
service coverage
map.
Echoes or
noises
The trunk line of
network is in bad
condition. It is a
regional problem.
Hang off the call and
dial again. Choose
another better line.
In some areas, the
call lines are in bad
condition.
Shorter
standby time
The standby time is
relevant to network
settings.
In poor reception
areas, turn off your
phone temporarily.
Replace the batteries
Change with a new
battery.
When no signals are
received, your phone
will continue
searching for base
stations, thus
consuming a large
amount of battery
power and reducing
standby time.
Use your phone at
strong signal areas or
Turn off the phone
temporarily.
Failed to turn
on your phone
The battery power is
used up.
Check the battery
power level or charge
the battery.
SIM card error
The SIM card is
damaged.
Contact your network
service provider.
The SIM card is not
properly installed.
Ensure the SIM card
is properly installed.
The metallic face of
the SIM card is
contaminated.
Wipe the face with a
clean cloth.
Failed to
connect to the
network
The SIM card is
invalid.
Contact your network
service provider.
Beyond the GSM
coverage.
Consult the network
service provider for
service areas.
The signal is feeble.
Retry at a stronger
signal area.
Failed to
make a call
The call barring
feature is used.
Cancel the call
barring settings.
The fixed dialing
number feature is
used.
Cancel the fixed
dialing number
settings.
PIN code
error
Enter incorrect PIN
codes for three times
in succession.
Contact your network
service provider.
Failed to
charge the
battery
The battery or the
charger is damaged.
Change a new battery
or charger.
Charge the battery
when
ambient
temperature
is
lower
than -10
℃
or above 55
℃
.
Change the
environment.
Poor connection.
Check whether the
plug is properly
connected.
Failed to add
contacts to
The storage space of
phonebook is used
Delete some contacts
from the phonebook.
