HTC 10 Sprint - Manual (Page 110)

Phone Calls and Voicemail 97
Hearing Aids
Select the Hearing aids option to enable hearing aid compatibility that amplifies your phone ’s in-call
volume.
1. Tap > > Settings.
2. Tap Call.
3. Select the Hearing aids option.
4. Select Sidetone to get voice feedback in a hearing aid.
CDMA Call Settings
Use these options to enable hearing aid compatibility, and adjust several call settings, such as
teletypewriter and DDTM.
1. Tap > > Settings.
2. Tap Call.
3. Tap 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. Tap > > Settings.
2. Tap Call.
3. Tap CDMA call settings > TTY mode.
4. Tap TTY Full, TTY HCO, or TTY VCO. Tap 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.