LG Optimus L9 Benutzerhandbuch Seite 216

Message Possible causes
The screen
does not
turn on Proximity sensor
when I problem
receive a
call.
No sound Vibration mode
Hangs up Intermittent
or freezes 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.
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