LG P690 User Manual page 118

Important notice
13. When the screen
freezes
If the screen freezes or the phone
does not respond when you try to
operate it:
Remove the battery, reinsert it,
then turn the phone on. If it still
does not work, please contact the
service centre.
14. Do not connect your
phone when you turn
on/off your PC.
Make sure you disconnect the
data cable between your phone
and PC; leaving it connected might
cause errors on your PC.
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