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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/T4 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.
CTIA Requirements

Do not disassemble or open, crush, bend or
deform, puncture or shred the battery.

Do not modify or remanufacture, attempt to
insert foreign objects into the battery, immerse
or expose to water or other liquids, expose to
fire, explosion or other hazard.
 Only use the battery for the system for which it
is specified.

Only use the battery with a charging system
that has been qualified with the system per
CTIA Certification Requirements for Battery
System Compliance to IEEE 1725. Use of an
unqualified battery or charger may present a
risk of fire, explosion, leakage, or other
hazard.

Do not short circuit a battery or allow metallic
conductive objects to contact the battery
terminals.

Replace the battery only with another battery
that has been qualified with the system per
this standard, IEEE-Std-1725.