According to an analysis recently published in the Journal of the American Heart Association, certain newer Apple iPhones are built with internal magnets that can significantly interfere with the function of cardiac implantable electronic devices (CIEDs). During the small study it found that 11 of 14 CIEDs experienced interference when an iPhone 12 Max Pro was held within 1.5 cm to the cardiac device—even when in the manufacturer’s sealed package. These newer magnets are used to allow the phones to charge wirelessly and are stronger than magnets in earlier iPhones. Up until now, cell phones were found to pose little risk in interference with CIED function.
