Apple has warned the iPhone 12 and MagSafe accessories should be kept a “safe distance away” from pacemakers.

Pacemakers can be affected by magnetic fields. That has caused some concern the iPhone 12 may pose more of a risk, since it has more magnets than previous models.

Apple has updated its support document to warn users of potential issues. The company doesn’t expect the new models to be more dangerous, but recommends an abundance of caution.

Though all iPhone 12 models contain more magnets than prior iPhone models, they’re not expected to pose a greater risk of magnetic interference to medical devices than prior iPhone models.

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.

iPhone 12 users with pacemakers would do well to follow Apple’s advice and consult with their physician.