I would assume (hope!) that Doctors and technicians would cover this concern when discussing life-saving, implanted devices! Better safe than sorry! You could save a life if you mention the interactions of "smart" devices and electronic medical implants.
Keep the iPhone 12
and Other Magnet-Bearing
Consumer Electronics
Away from
Implanted Medical Devices (https://tidbits.com/2021/01/25/keep-the-iphone-12-and-other-magnet-bearing-consumer-electronics-away-from-implanted-medical-devices/)
TidBITS, 25 January 2021