LG -E720 User Manual page 246

Troubleshooting
Message
Calls not
available
Phone cannot
be switched
on
Charging error
86
Possible causes
Dialing error
New SIM card
inserted
Prepaid Charge
limit reached
On/Off key pressed
long enough
Battery is not
charged
Battery contacts
are dirty
Battery is not
charged.
Outside
temperature is too
hot or cold
Contact problem
No voltage
Charger defective
Wrong charger
Battery defective
Possible Corrective Measures
New network not authorised.
Check for new restrictions.
Contact service provider or reset limit
with PIN 2.
Press the On/Off key down for at least
two seconds.
Keep charger attached for a longer time
Clean the contacts.
Take out the battery and insert again.
Charge battery.
Make sure phone is charging under
normal temperatures.
Check the charger and connection to the
phone. Check the battery contacts and
clean them if necessary.
Plug into a different socket.
If the charger does not warm up, replace
it.
Only use original LG accessories.
Replace battery.