Apple has recently shared recent news that under certain conditions, magnets and electromagnetic fields may interfere with medical devices. For example, implanted pacemakers and defibrillators may contain sensors that respond to magnets and radios when in close contact. To avoid any potential interactions with these types of medical device, keep your Apple product a safe distance away from your medical device (more than 15 cm (6 inches) apart or more than 30 cm (12 inches) apart if charging wirelessly). Consult with your doctor and the manufacturer of your device for specific guidelines.
If you suspect that your Apple product is interfering with your medical device, stop using your Apple product and consult your doctor and the manufacturer of your medical device.