LG B2070 User Manual page 163

Trouble shooting
Message
Charging error
Phone loses
network
Number not
permitted
78
Possible causes
Battery totally empty
Temperature out of range
Contact problem
No mains voltage
Charger defective
Wrong charger
Battery defective
Signal too weak
The Fixed dial number function is on.
Possible Corrective measures
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.