LG P920 User Manual page 292

Important notice
WARNING
Do not insert or remove the microSD card when the phone
is on. This might damage the microSD card as well as your
phone, and the data stored on the microSD card could be
corrupted. To remove the microSD card safely, from the
Home screen press the Menu key and touch Settings >
SD card & phone storage > Unmount SD card.
9. Unlock screen when using a data
connection
The LCD display will go dark if untouched for a set time
when using a data connection. Touch it to turn it on
again.
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10. Do not connect your phone when
you turn your PC on and off
Make sure you disconnect your phone and PC via a data
cable to avoid any harm to your PC.
11. Hold your phone upright
Please hold your phone straight and level, like a normal
phone. The LG-P920 has an internal antenna. Be careful
not to scratch or damage the back of the phone, as this
will impair performance. While making/receiving calls
or sending/receiving data, try to avoid holding the lower
part of the phone where the antenna is located. This
may affect call quality.