LG Optimus Extreme Guia Del Usuario página 59

Message Possible causes
The screen
does not turn
Proximity sensor problem
on when I
receive a call.
No sound Vibration mode
Hang up or
Intermittent software problem
freeze
Possible corrective measures
If you use any protection tape or case,
check to see if it has covered the area
around the proximity sensor. Make sure
that the area around the proximity sensor
is clean.
Check the settings status of the sound
menu to make sure you are not in vibrate
or silent mode.
Remove the battery, insert it again and
switch on the phone.
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