Apple Elaborates on Potential for iPhone 12 and MagSafe Accessories to Interfere With Implantable Medical Devices

Since the launch of iPhone 12 models in October, Apple has acknowledged that the devices may cause electromagnetic interference with medical devices like pacemakers and defibrillators, but the company has now shared additional information.

magsafecasedangle
Apple added the following paragraph to a related support document today:

Medical devices such as implanted pacemakers and defibrillators might contain sensors that respond to magnets and radios when in close contact. To avoid any potential interactions with these devices, keep your iPhone and MagSafe accessories a safe distance away from your device (more than 6 inches / 15 cm apart or more than 12 inches / 30 cm apart if wirelessly charging). But consult with your physician and your device manufacturer for specific guidelines.

While the support document already mentioned "MagSafe accessories" in the title, Apple has further emphasized that accessories like the MagSafe Charger and MagSafe Duo Charger may also interfere with medical devices:

All MagSafe accessories (each sold separately) also contain magnets—and MagSafe Charger and MagSafe Duo Charger contain radios. These magnets and electromagnetic fields might interfere with medical devices.

Apple continues to state that while all iPhone 12 models contain more magnets than prior iPhone models, they are "not expected to pose a greater risk of magnetic interference to medical devices than prior iPhone models."

Earlier this month, an article in the Heart Rhythm Journal indicated that iPhone 12 models can "potentially inhibit lifesaving therapy in a patient" due to magnetic interference with implantable medical devices. Three doctors in Michigan tested this interaction by holding an iPhone 12 near a patient's implantable cardioverter defibrillator, which immediately went into a "suspended" state for the duration of the test, according to the article.

"We hereby bring an important public health issue concerning the newer generation iPhone 12 which can potentially inhibit lifesaving therapy in a patient particularly while carrying the phone in upper pockets," the doctors wrote. "Medical device manufacturers and implanting physicians should remain vigilant in making patients aware of this significant interaction of the iPhone 12 and other smart wearables with their cardiac implantable electronic devices."

The article in the Heart Rhythm Journal was first surfaced by Brazilian website MacMagazine.

Apple provides more information in the "Important safety information for iPhone" section of the iPhone User Guide.

Related Forum: iPhone

Popular Stories

iOS 19 Mock WWDC25 Feature

iOS 19 Expected to Run on These iPhones

Monday March 31, 2025 5:28 pm PDT by
iOS 19 will not be available on the iPhone XR, iPhone XS, or the iPhone XS Max, according a private account on social media site X that has accurately provided information on device compatibility in the past. The iPhone XR, iPhone XS, and iPhone XS Max all have an A12 Bionic chip, so it looks like iOS 19 will discontinue support for that chip. All other iPhones that run iOS 18 are expected...
watchOS 11 Thumb 2 1

Apple Releases watchOS 11.4 With Sleep Alarm Update

Tuesday April 1, 2025 10:34 am PDT by
Apple today released watchOS 11.4, the fourth major update to the operating system that runs on the Apple Watch. watchOS 11.4 is compatible with the Apple Watch Series 6 and later, all Apple Watch Ultra models, and the Apple Watch SE 2. watchOS 11.4 can be downloaded on a connected iPhone by opening up the Apple Watch app and going to General > Software Update. To install the new software,...
AirPods Pro Firmware Feature

Apple Releases New Firmware for AirPods Pro 2 and AirPods 4

Monday March 31, 2025 11:27 am PDT by
Apple today released new firmware updates for all AirPods 4 and AirPods Pro 2 models. The new firmware is version 7E93, up from the 7B21 firmware that was installed on the AirPods Pro 2 and the 7B20 firmware available on the AirPods 4 and AirPods 4 with ANC. It is not immediately clear what new features or changes are included in the new firmware, but we'll update this article should we find ...
maxresdefault

Apple Releases iOS 18.4 With Priority Notifications, Ambient Music, New Emoji and More

Monday March 31, 2025 10:03 am PDT by
Apple today released iOS 18.4 and iPadOS 18.4, the fourth major updates to the iOS 18 and iPadOS 18 operating system updates that came out last year. iOS 18.4 and iPadOS 18.4 come two months after Apple released iOS 18.3 and iPadOS 18.3. Subscribe to the MacRumors YouTube channel for more videos. The new software can be downloaded on eligible iPhones and iPads over-the-air by going to...
iPhone 17 Pro 34ths Perspective

iPhone 17 Pro Launching Later This Year With These 10 New Features

Sunday March 23, 2025 10:00 am PDT by
While the iPhone 17 Pro and iPhone 17 Pro Max are not expected to launch until September, there are already plenty of rumors about the devices. Below, we recap key changes rumored for the iPhone 17 Pro models as of March 2025: Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone 16 Pro models have a titanium frame, and the iPhone ...
Apple Card iPhone 16 Pro Feature

Visa and American Express Vying to Win Apple Card Deal in 'Fierce' Fight

Tuesday April 1, 2025 1:50 pm PDT by
Visa wants to pay Apple approximately $100 million to be the new payment network for the Apple Card, reports The Wall Street Journal. As of right now, the Apple Card is on the Mastercard payment network, but that is set to change because Apple is ending its partnership with Goldman Sachs. Both American Express and Visa are vying to replace Mastercard as Apple's card services provider, while...
iOS 18

Apple Seeds First Beta of iOS 18.5 to Developers

Wednesday April 2, 2025 10:11 am PDT by
Apple today seeded the first betas of upcoming iOS 18.5 and iPadOS 18.5 updates to developers for testing purposes, with the software coming just two days after Apple released iOS 18.4 and iPadOS 18.4. iOS 18.5 and iPadOS 18.5 can be downloaded from the Settings app on a compatible device by going to General > Software Update. We don't yet know what Apple is introducing in the iOS 18.5...

Top Rated Comments

xxray Avatar
55 months ago
I know this doesn't affect most people, but the cons of MagSafe on the iPhone 12 series seem to outweigh the pros.
Score: 44 Votes (Like | Disagree)
monroerr Avatar
55 months ago
One has never been recommended to carry any device such as a smart phone or anything magnetic in your upper pockets with any chest implanted electronic device. That has always been the case. Just like you don't go through metal detectors or let TSA wand you.
Score: 30 Votes (Like | Disagree)
mikedis Avatar
55 months ago
Never thought I’d live to see the day that a major phone manufacturer had to tell people to be careful not to accidentally kill them selves with their phones...
Score: 28 Votes (Like | Disagree)
Wayfarer Avatar
55 months ago
Is just me or is MagSafe getting less and less appealing? Lol
Score: 25 Votes (Like | Disagree)
HiVolt Avatar
55 months ago
Magnet Gate. LOL.

All this because Apple did not want to switch to USB-C for charging, because they would lose huge revenue from accessories.
Score: 17 Votes (Like | Disagree)
stringParameter Avatar
55 months ago
Could have been so simple. One USB-C-charger for your phone, tablet and laptop.

However...
Score: 13 Votes (Like | Disagree)