LG U8150 Manuel Du Propriétaire

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Do not store it in hot areas. High temperatures can shorten
the life of electronic devices, damage batteries and warp or
melt certain plastics.
Do not store your phone in cold areas. When it warms up
(to its normal temperature) moisture can form inside the
phone which may damage electronic circuit boards.
All of the above suggestions apply equally to your phone,
battery, charger or any accessory. If any of them is not working
properly, contact Orange customer services on 07973 100 150
or, if you are a pay as you go customer, on 07973 100 451,
from any other phone for assistance.
radio waves and 
your phone
Specific absorbtion rate, or SAR, is an internationally
accepted way of measuring how much radio frequency (RF)
energy is absorbed by the body when a mobile phone is
used.
All phones on the Orange network are designed by the
phone manufacturers to comply with the relevant
recommendations and standards. Orange believes that new
and existing customers should be fully informed about SAR.
The SAR value for your LG U8150  is 0.638W/kg (10g).