A new study published in the Journal of the American Heart Association shows that the iPhone 12 Pro Max can cause magnetic interference when placed very close to implantable cardiac devices from three major brands. Researchers first tested the iPhone 12 Pro Max by placing it on a patient’s skin right over the implant, replicating the impact of a phone placed in the breast pocket of a shirt. In a second test, they placed the phone on top of an unwrapped implantable device, still in its box. In both cases, researchers were able to detect significant magnetic interference. The study was small, involving three patients and a total of 14 devices from Medtronic, Abbott, and Boston Scientific. Still, interference was present in all of the implanted devices and more than 70% of the boxed-up devices. The culprit here is MagSafe, a feature that was reintroduced in 12-series devices and refers to Apple’s various magnetic accessories for iPhone and iPad. This includes MagSafe wireless chargers, cases, and wallets. To connect iPhones and iPads to these accessories, Apple has installed a ring of magnets inside the 12-series devices. This allows the accessories to snap onto its phones and tablets and stay attached
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