LG T580 User Manual page 220

Problem
Loss of Network
You have entered a
number but it was not
dialed
Your correspondent
cannot reach you
Your correspondent
cannot hear you
speaking
38
Possible Solution
You may be in a weak signal area. Move and try again. You are trying
to access an option for which you have no subscription with your
service provider. Contact the service provider for further details.
Be sure that you have pressed Call key.
Be sure that you have accessed the right network service.
Be sure that you have not set an outgoing call barring option.
Be sure that you have entered the area code.
Be sure that your phone is switched on. Be sure that you are
accessing the network service. Be sure that you have not set an
incoming call barring option.
Be sure that you have switched off the loudspeaker. Be sure that you
are holding the phone close enough to your mouth. The microphone
is located at the bottom of the phone.