LG D160 Guide De L'utilisateur page 332

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 restart your phone.
If it still does not work, please contact the service center.
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