LG E986 User Manual page 358

Troubleshooting
Message
The screen
does not
turn on
when I
receive a
call.
No sound
Hangs up
or freezes
108
Possible causes
Proximity sensor
problem
Vibration mode
Intermittent
software problem
Possible corrective measures
If you use a protection tape or case,
make sure it has not covered the area
around the proximity sensor. Make
sure that the area around the proximity
sensor is clean.
Check the settings status in the sound
menu to make sure you are not in
vibration or silent mode.
Try to perform a software update via
the website.