LG -E440G User Manual page 111

Important notice
8. Hold your phone upright
Hold your cell phone vertically, as you would a regular phone. Your phone
has an internal antenna. Be careful not to scratch or damage the back of
the phone, as this may affect performance.
When 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.
9. When the screen freezes
If the screen freezes or the phone does not respond when you try to
operate it:
Press and hold the Power/Lock Key for 10 seconds to turn your phone off.
If it still does not work, please contact the service center.
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