Apple Warns That Strong Magnets in iPhone Accessories Can Blur Rear-Camera Photos
Apple says magnets in accessories such as car mounts, grips and power banks can interfere with the rear camera's stabilization sensors and blur photos, and advises keeping magnetic fields away from the lens.
The warning covers the camera system Apple introduced in September with the iPhone 18 Pro and iPhone 18 Pro Max, which the company described at launch as its most advanced to date. The lineup's 48-megapixel Fusion Main camera combines a variable aperture, a low-light sensor and professional controls aimed at both casual users and professionals.
Many common accessories attach to an iPhone through strong magnets or magnetized metal plates, including removable grips, car mounts, power banks and ring lights. Apple found that while those magnets are unlikely to affect the phone's internal systems, they do interfere with the camera.
The rear-facing camera relies on two magnet-sensitive lens-positioning technologies to reduce blur and hold focus. Optical image stabilization, or OIS, uses a gyroscope to detect camera movement while a photo is being taken and adjusts the lens to offset it, reducing motion blur. Closed-loop autofocus uses onboard accelerometers, a type of magnetic sensor, to measure gravity and vibration and compensate by shifting the lens position, preserving sharpness in stills, videos and panoramas.
Because lens-position sensors are sensitive to magnetic interference, placing a magnet too close to the camera lens can make motion sensing less accurate and restrict the lens's range of movement. Apple says the OIS and autofocus sensors may be disabled as a result, although the camera can still capture images using other stabilization methods. The company's support page notes that magnetic accessories may cause blurred images.
Apple also lists other factors that can damage the same sensors. Exposure to high-amplitude vibrations, such as those produced by high-powered motorcycles, can cause lasting harm to the camera's stabilization hardware.
Apple's recommended fix is to avoid accessories that place magnetic fields near the cameras. It specifically cautions users about third-party accessories with strong magnets, including latch folio covers and car mounts. Buyers weighing a new accessory are asked to consider whether lower image quality is an acceptable tradeoff. Avoiding magnets does not guarantee trouble-free camera performance, since other underlying problems may be at work, and Apple directs users to its support page for step-by-step camera troubleshooting.
Editor's Summary
Apple has confirmed that strong magnets in iPhone accessories can interfere with the rear camera's optical image stabilization and closed-loop autofocus sensors, causing blurred images, and that high-amplitude vibration can permanently damage the same components. The company advises users to keep magnetic mounts, covers and other magnetized accessories away from the lens. The issue affects the camera system on the iPhone 18 Pro and Pro Max introduced in September.