Apple's warning to keep the iPhone 12 away from pacemakers is due to the fact that the magnets in the iPhone 12 series and MagSafe accessories may cause electromagnetic interference with medical devices.
Apple wrote in a support document updated on January 23, 2021, not to bring the iPhone 12 and Magsafe accessories too close to medical devices such as implantable pacemakers, recommending a distance of 15cm to 30cm.
Industry insiders generally believe that Apple's reason for doing this is likely related to a previous report in a medical journal. The report stated that when the iPhone 12 and the pacemaker in a patient's body are too close, the pacemaker will malfunction leading to a sudden stop.
Extended information
Precautions after pacemaker placement:
In the initial period of pacemaker placement, patients will need to undergo a gradual process of recovery and adaptation, and some patients may experience a certain degree of foreign body sensation, which they will adjust to over time.
In the early stage, patients should not do too much physical activity. The upper limb on the side where the pacemaker is implanted should not move too much in the early stage to avoid dislocation of the electrode. Since the pacemaker is fully implanted, patients can bathe, shower, and even swim.
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