Motorola H390 Quick Start Manual page 9

Electromagnetic
Interference/Compatibility
Note: Nearly every electronic device is
susceptible to electromagnetic interference (EMI)
if inadequately shielded, designed, or otherwise
configured for electromagnetic compatibility.
Facilities
To avoid electromagnetic interference and/or
compatibility conflicts, turn off your device in any
facility where posted notices instruct you to do
so. Hospitals or health care facilities may be
using equipment that is sensitive to external RF
energy.
Aircraft
When instructed to do so, turn off your device
when on board an aircraft. Any use of a device
must be in accordance with applicable
regulations per airline crew instructions.
Safety Information 7