Zte X500 Manual page 30

Medical devices
Operation of any radio transmitting equipment, including
wireless devices, may interfere with the functionality of
inadequately protected medical devices. Consult a physician
or the manufacturer of the medical device to determine if they
are adequately shielded from external RF energy or if you
have any questions. Switch off your device 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.
Implanted medical devices
Manufacturers of medical devices recommend that a minimum
separation of 15.3 centimeters (6 inches) should be
maintained between a wireless device and an implanted
medical device, such as a pacemaker or implanted
cardioverter defibrillator, to avoid potential interference with the
medical device. Persons who have such devices should:
Always keep the wireless device more than 15.3 centimeters
(6 inches) from the medical device when the wireless device is
turned on.