Other medical devices, Vehicles, Posted facilities – Samsung SGH-A737HBAATT User Manual
Page 163
 
Health and Safety Information 160
Using Your Phone Near Other Electronic Devices
The wireless telephone industry has developed ratings for some of their mobile 
phones, to assist hearing device users in finding phones that may be compatible 
with their hearing devices. Not all phones have been rated. Phones that are rated 
have the rating on their box or a label on the box.
The ratings are not guarantees. Results will vary depending on the user’s hearing 
device and hearing loss. If your hearing device happens to be vulnerable to 
interference, you may not be able to use a rated phone successfully. Trying out the 
phone with your hearing device is the best way to evaluate it for your personal 
needs.
M-Ratings: Phones rated M3 or M4 meet FCC requirements and are likely to 
generate less interference to hearing devices than phones that are not labeled. M4 is 
the better/higher of the two ratings.
T-Ratings: Phones rated T3 or T4 meet FCC requirements and are likely to be more 
usable with a hearing device’s telecoil (“T Switch” or “Telephone Switch”) than 
unrated phones. T4 is the better/higher of the two ratings. (Note that not all hearing 
devices have telecoils in them.)
Hearing devices may also be measured for immunity to this type of interference. Your
hearing device manufacturer or hearing health professional may help you find results for
your hearing device. The more immune your hearing aid is, the less likely you are to 
experience interference noise from mobile phones.
Other Medical Devices
If you use any other personal medical devices, consult the manufacturer of your 
device to determine if it is adequately shielded from external RF energy. Your 
physician may be able to assist you in obtaining this information. Switch your phone 
off in health care facilities when any regulations posted in these areas instruct you to 
do so. Hospitals or health care facilities may be using equipment that could be 
sensitive to external RF energy.
Vehicles
RF signals may affect improperly installed or inadequately shielded electronic 
systems in motor vehicles. Check with the manufacturer or its representative 
regarding your vehicle. You should also consult the manufacturer of any equipment 
that has been added to your vehicle.
Posted Facilities
Switch your phone off in any facility where posted notices require you to do so.