20
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 SIM card is invalid.
Contact your network service provider.
the network
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
The battery or the charger is
damaged.
Change a new battery or charger.
battery
Charge the battery when ambient
temperature is lower than -
10°C or
above 55°C.
Change the environment.
Poor connection.
Check whether the plug is properly
connected.
Failed to add
contacts to
phonebook
The storage space of phonebook is
used up.
Delete some contacts from the
phonebook.
Failed to set
up some
features
Your network service provider does
not provide the services, or you
haven't subscribed them.
Contact your network service provider.
