As far as I know we have not done any testing with the nRF52 in a magnetic field. I also do not know if any of the components on the nRF52 DK contains ferrite. You will have to go through the BOM in the nRF52 Hardware Files, found here.
Yes, I would assume that if the nRF52 exposed to a magnetic field runs the ble_app_hrs example without any problems, then the other examples will work as well.
Yes, I would assume that if the nRF52 exposed to a magnetic field runs the ble_app_hrs example without any problems, then the other examples will work as well.
