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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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