LG GT400 User Manual page 303

Message Possible causes
On/Off key pressed too
briefly
Phone cannot
be switched on Battery empty
Battery contacts dirty
Battery totally empty
Temperature out of range
Contact problem
Charging error No mains voltage
Charger defective
Wrong charger
Battery defective
Phone loses
Signal too weak
network
Number not The Fixed dial number
permitted function is on.
Possible Corrective
measures
Press On/Off key for at least
two seconds.
Charge battery. Check charging
indicator in the display.
Clean contacts.
Charge battery.
Make sure the ambient
temperature is right, wait for a
while, and then charge again.
Check power supply and
connection to the phone.
Check the battery contacts,
clean them if necessary.
Plug in to a different socket or
check voltage.
If the charger does not warm
up, replace it.
Only use original LG
accessories.
Replace battery.
Reconnection to another
service provider is automatic.
Check settings.
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