HTC One E8 - Manual (Page 238)

Settings 225
Hearing Aids
Select the Hearing aids option to enable hearing aid compatibility that amplifies your phone’s in-call
volume.
1. With two fingers, swipe down from the status bar, and then touch > Call.
2. Select the Hearing aids option.
CDMA Call Settings
Use these options to enable hearing aid compatibility, and adjust several call settings, such as
teletypewriter and DDTM.
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With two fingers, swipe down from the status bar, and then touch > Call > CDMA call
settings.
TTY Mode
A TTY (teletypewriter, also known as a TDD or Text Telephone) is a telecommunications phone that
allows people who are deaf, hard of hearing, or who have speech or language disabilities, to
communicate by telephone.
Your phone is compatible with select TTY phones. Please check with the manufacturer of your TTY
phone to ensure that it supports digital wireless transmission. Your phone and TTY phone will
connect using a special cable that plugs into your phone’s headset jack. If this cable was not
provided with your TTY phone, contact your TTY phone manufacturer to purchase the connector
cable.
When establishing your Sprint service, please call Sprint Customer Service using the state
Telecommunications Relay Service (TRS) by first dialing . Then provide
the state TRS with this number: 866-727-4889.
To turn TTY Mode on or off:
1. With two fingers, swipe down from the status bar, and then touch > Call > CDMA call
settings > TTY mode.
2. Touch TTY Full, TTY HCO, or TTY VCO. Touch TTY Off to turn TTY mode off.
Note: When enabled, TTY mode may impair the audio quality of non-TTY phones connected to the
headset jack.
Warning: 9-1-1 Emergency Calling
Sprint recommends that TTY users make emergency calls by other means, including
Telecommunications Relay Services (TRS), analog cellular, and landline communications. Wireless