In a message released Saturday on Apple’s support page, the company expanded on previously provided safety information and warned users that iPhones contain magnets and radios that emit electromagnetic fields, both of which “can interfere” with medical devices such as implanted pacemakers and defibrillators.
Saturday’s announcement specifically warns users about “the magnets in” all four iPhone 12 models, as well as MagSafe accessories. Apple (AAPL) notes that iPhone 12 versions contain more magnets than previous iPhone models, but it was also said that they do not pose a greater risk of magnetic interference with medical devices than previous models.
Apple said in the update that medical devices may contain sensors that can respond to magnets or radio waves coming close. The company recommends keeping iPhones and MagSafe chargers a “safe distance” from medical equipment – which it defines as being more than 6 inches apart, or 6 inches apart when charging wirelessly.
When Apple unveiled the iPhone 12 last fall, the company also announced the return of MagSafe – previously a much-loved MacBook feature – for the iPhone. Customers can purchase MagSafe charging docks to charge their devices wirelessly and other magnetic accessories, including cases and wallets that attach to the back of the phones.
Apple did not immediately respond to a request for comment as to why it is now expanding its security guidelines. But the Heart Rhythm Journal released a report earlier this month claiming that the magnets in the iPhone 12 that make it compatible with MagSafe accessories could interfere with an implanted defibrillator.
“Consult your physician and medical device manufacturer for information specific to your medical device and whether you need to maintain a safe distance between your medical device and iPhone or any MagSafe accessories,” Apple said in the notice. “Manufacturers often make recommendations about the safe use of their devices around wireless or magnetic products to avoid potential interference.”
If a customer feels that their iPhone 12 or MagSafe charger is interfering with their medical device, they should stop using it, Apple said.
Another thing that iPhone 12 users should keep in mind when using MagSafe chargers: Do not put credit cards, security badges, passports or key FOBs between your phone and your MagSafe charger as the magnets have magnetic strips or RFID chips in these items can damage, Apple warns. If you have a phone case that can accommodate such items, you should remove it before charging your device wirelessly.
