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Hearing Aid Compatibility (HAC)
This mobile device is rated M4/T4.
The Federal Communications Commission (FCC) has defined
standards for wireless mobile devices to be compatible with hearing
aid instruments. The current standard is set by American National
Standard Institute (ANSI). The HAC standard adopts a M/T rating
system.
The "M" rating indicates the reduced interference with hearing aids
that operates in acoustic mode, such as on a microphone. The "M"
rates from M1 to M4, with M4 being the best. The "T" rating specifies
the capability of the wireless mobile devices in operating with hearing
aids that integrates a telecoil (a small copper wire inside hearing aid
that converts sounds into electromagnetic signals) and operates in
inductive coupling mode. The "T" rates from T1 to T4, with T4 being
the best.
The ratings are not a guarantee. However, it is suggested to choose a
wireless mobile device with at least "M3" in the M rating and "T3" in the
T rating to ensure wide compatibility with hearing aid instruments.
Cautions for Battery and Accessories
This product is built in with a Lithium-ion battery. In other words, this
product is a non-unibody device with a non-removable battery. Follow
the caution measures below to ensure safe use of the battery and
related accessories.
•
Use specified chargers only. Non-specified chargers may cause
malfunction, toxic leakage, burst, or overheat to the battery.
•
Do not attempt to open battery pack to avoid leadage of toxic
substances or burn.
•
Do not attempt to disassemble or probe the battery.
•
Do not cause short circuit to the battery.
•
Do not crush, bend or attempt to change the form of the battery.
•
Do not attempt to modify the battery.
•
Do not insert foreign objects into the battery.
•
Do not immerse the battery in water or other types of liquid.
•
Do not expose the battery to fire, explosion or other hazardous
conditions.
•
Do not expose the battery pack to temperatures higher than
140°F (60°C).
•
Exercise caution regarding the temperature range of the phone:
the operating temperature for the phone is -14°F (-10°C) to 113°F
(45°C) and the charging temperature for phone is 32°F (0°C) to
113°F (45°C).
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