NEW YORK - Apple is warning customers that its smartphones could interfere with medical devices, including pacemakers.

In a new notice published on the tech giant’s support page, the company warned users that iPhones contain magnets and radios that emit electromagnetic fields, both of which “may interfere” with medical devices.

Health experts have long warned against holding mobile phones too close to implanted medical devices, however, this is the first time that the tech giant has acknowledged any danger.