62■ Medical devicesOperation of any radio transmitting equipment, includingwireless phones, may interfere with the functionality ofinadequately protected medical devices. Consult a physician orthe manufacturer of the medical device to determine if they areadequately shielded from external RF energy or if you have anyquestions. Switch off your device in health care facilities whenany regulations posted in these areas instruct you to do so.Hospitals or health care facilities may be using equipment thatcould be sensitive to external RF energy.Implanted medical devicesManufacturers of medical devices recommend that a minimumseparation of 15.3 centimeters (6 inches) should be maintainedbetween a wireless device and an implanted medical device, suchas a pacemaker or implanted cardioverter defibrillator, to avoidpotential interference with the medical device. Persons who havesuch devices should:• Always keep the wireless device more than 15.3 centimeters(6 inches) from the medical device when the wireless device isturned on.• Not carry the wireless device in a breast pocket.• Hold the wireless device to the ear opposite the medicaldevice to minimize the potential for interference.