LG LG Optimus L9 (P768f) User Manual
66
Troubleshooting
This chapter lists some problems you might encounter while using your phone. Some
problems require you to call your service provider, but most are easy to fix yourself.
Message
Possible causes
Possible corrective measures
SIM error
There is no SIM card in the
phone or it is inserted incorrectly.
phone or it is inserted incorrectly.
Make sure that the SIM card is correctly inserted.
No network
connection/
Losing
network
connection/
Losing
network
Signal is weak or you're outside
the carrier network.
the carrier network.
Move towards a window or into an open area.
Check the network operator coverage map.
Check the network operator coverage map.
Operator applied new services.
Check whether the SIM card is more than 6~12
months old. If so, change your SIM at your
network provider's nearest branch. Contact your
service provider.
months old. If so, change your SIM at your
network provider's nearest branch. Contact your
service provider.
Codes do not
match
match
To change a security code, you
will need to confirm the new
code by re-entering it.
will need to confirm the new
code by re-entering it.
If you forget the code, contact your service
provider.
provider.
The two codes you have entered
do not match.
do not match.
Any
application
cannot be set
application
cannot be set
Not supported by service
provider or registration required.
provider or registration required.
Contact your service provider.
Calls not
available
available
Dialling error
New network not authorised.
New SIM card inserted.
Check for new restrictions.
Pre-paid charge limit reached.
Contact service provider or reset limit with PIN2.
Phone cannot
be switched
on
be switched
on
On/Off key pressed too briefly.
Press the On/Off key down for at least two
seconds.
seconds.
Battery is not charged.
Charge battery. Check charging indicator on the
display.
display.
Battery contacts are dirty.
Clean the battery contacts.