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Safety
k Teletypewriter (TTY) Devices
You can use an optional teletypewriter (TTY) device with your phone to
send and receive calls. You must plug the TTY device into the phone’s
headset connector and set the phone to operate in one of three TTY
modes.
A TTY is a communication device used by people who are hard of
hearing or have a speech impairment. TTY does not work from mobile
phone to mobile phone. Your phone has a 3.5mm jack. Use a TSB-121
compliant cable (provided by the TTY manufacturer) and a 3.5mm to
2.5mm Audio Adapter to connect the TTY device to your phone. Set the
phone to Medium volume level for proper operation. If you experience
a high number of incorrect characters, adjust the volume as needed to
minimize the error rate. For optimal performance, your phone should
be at least 12 inches (30 centimeters) from the TTY device. Placing the
phone too close to the TTY device may cause high error rates.
k Avoid potential hearing loss.
Prolonged exposure to loud sounds (including music) is the most
common cause of preventable hearing loss. Some scientific research
suggests that using portable audio devices, such as portable music
players and cellular telephones, at high volume settings for long
durations may lead to permanent noise-induced hearing loss. This
includes the use of headphones (including headsets, earbuds and
Bluetooth or other wireless devices). Exposure to very loud sound has
also been associated in some studies with tinnitus (a ringing in the ear),
hypersensitivity to sound and distorted hearing. Individual susceptibility
to noise-induced hearing loss and other potential hearing problems
varies.
The amount of sound produced by a portable audio device varies
depending on the nature of the sound, the device, the device settings
and the headphones. You should follow some common sense
recommendations when using any portable audio device: