LG Optimus L9 Guide De L'utilisateur page 153

Getting to know your phone
To use the microSD card on
TIP!
your phone again, you need to
open the notification drawer and
touch
> Charge only.
To disconnect your phone from the
computer:
Open the notification drawer and touch
> Charge only to disconnect your
phone from the computer safely.
11. Hold your phone upright
Hold your mobile phone vertically, as you
would a regular phone. The LG-P768 has
an internal antenna. Be careful not to
scratch or damage the back of the phone,
as this may affect performance.
While making/receiving calls or sending/
receiving data, avoid holding the lower
part of the phone where the antenna is
located. Doing so may affect call quality.
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12. 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.
OR
Press and hold the Power/Lock key for
10 seconds to turn it off.
If it still does not work, please contact the
service centre.