LG -P690 Quick Start Manual page 54

Troubleshooting
Message Possible causes Possible Corrective Measures
The screen
does not turn Proximity sensor
on when I problem
receive a call.
No Sound Vibration mode
Hang up or Intermittent software
freeze problem
18
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.
Try to do a software update service via website.