Health and Safety Information 80personal needs. Your Virgin Mobile Slash phone bySamsung has an M4 rating and a T4 rating.M-Ratings: Phones rated M3 or M4 meet FCCrequirements and are likely to generate lessinterference to hearing devices than phones that arenot labeled. M4 is the better/higher of the tworatings.T-Ratings: Phones rated T3 or T4 meet FCCrequirements and are likely to generate lessinterference to hearing devices than phones that arenot labeled. T4 is the better/higher of the two ratings.Hearing devices may also be rated. Your hearingdevice manufacturer or hearing health professionalmay help you find this rating. Higher ratings meanthat the hearing device is relatively immune tointerference noise. The hearing aid and wirelessphone rating values are then added together. A sumof 5 is considered acceptable for normal use. A sumof 6 is considered for best use.In the above example, if a hearing aid meets the M2level rating and the wireless phone meets the M3level rating, the sum of the two values equal M5. Thisis synonymous for T ratings. This should provide thehearing aid user with "normal usage" while usingtheir hearing aid with the particular wireless phone."Normal usage" in this context is defined as a signalquality that is acceptable for normal operation.The M mark is intended to be synonymous with the Umark. The T mark is intended to be synonymous withthe UT mark. The M and T marks are recommendedby the Alliance for Telecommunications IndustriesSolutions (ATIS). The U and UT marks are referencedin Section 20.19 of the FCC Rules.The HAC rating and measurement procedure aredescribed in the American National StandardsInstitute (ANSI) C63.19 standard.Other Medical DevicesIf you use any other personal medical devices,consult the manufacturer of your device to determineif it is adequately shielded from external RF energy.Your physician may be able to assist you in obtainingthis information. Switch your phone off in health carefacilities when any regulations posted in these areasinstruct you to do so. Hospitals or health carefacilities may be using equipment that could besensitive to external RF energy.VehiclesRF signals may affect improperly installed orinadequately shielded electronic systems in motorvehicles. Check with the manufacturer or itsrepresentative regarding your vehicle. You shouldalso consult the manufacturer of any equipment thathas been added to your vehicle.M3 + M2 = 5 T3 + T2 = 5