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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.) 
Your phone meets the M4/T3 level rating. 
Hearing devices may also be rated. Your hearing device 
manufacturer or hearing health professional may help you find 
this rating. For more information about FCC Hearing Aid 
Compatibility, please go to http://www.fcc.gov/cgb/dro. 
Distraction 
Driving 
Full attention must be given to driving at all times in order to 
reduce the risk of an accident. Using a phone while driving (even 
with a hands free kit) can cause distraction and lead to an 
accident. You must comply with local laws and regulations 
restricting the use of wireless devices while driving. 
Operating Machinery 
Full attention must be given to operating machinery in order to 
reduce the risk of an accident.