Apple said in the update that medical devices can contain sensors that may react to magnets or radio waves that come in close proximity. The company recommends keeping iPhones and MagSafe chargers a “safe distance” away from medical devices — which it defines as more than 6 inches apart, or 15 inches apart when wirelessly charging.
“Consult your physician and medical device manufacturer for information specific to your medical device and whether you need to maintain a safe distance of separation between your medical device and iPhone or any MagSafe accessories,” Apple said in the notice. “Manufacturers often provide recommendations on the safe use of their devices around wireless or magnetic products to prevent possible interference.”
If a customer feels like their iPhone 12 or MagSafe charger is interfering with their medical device, they should stop using them, Apple said.