HTC wing Manuel D’Utilisation

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182  Appendix
Hearing Aids
Some digital wireless phones may interfere with some hearing aids. In the 
event of such interference, you may want to consult your service provider, 
or call the customer service line to discuss alternatives.
Other Medical Devices
If you use any other personal medical device, consult the manufacturer 
of your device to determine if they are adequately shielded from external 
RF energy. Your physician may be able to assist you in obtaining this 
information.
Turn your phone OFF in health care facilities when any regulations posted 
in these areas instruct you to do so. Hospitals or health care facilities may 
be using equipment that could be sensitive to external RF energy.
Other tips and cautions
  Avoid using your phone near metal structures (for example, the steel 
frame of a building).
  Avoid using your phone near strong electromagnetic sources, such as 
microwave ovens, sound speakers, TV and radio.
  Avoid using your phone after a dramatic change in temperature.