LG E400g Guia Del Usuario página 20

Important notice
4 When you are finished, select Turn
off USB storage on the notification
drawer.
11. Hold your phone straight up
Hold your mobile phone straight up,
as you would a regular phone. The
LG-E400g has an internal antenna. Be
careful not to scratch or damage the
back of the phone, as that causes loss
of performance.
While making/receiving calls or
sending/receiving data, avoid holding
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the lower part of the phone where
the antenna is located. Doing so may
affect call quality.
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. If
it still does not work, please contact
the service center.