HTC One max User Manual page 245

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With two fingers, swipe down from the status bar, and then touch
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
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
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: 911 Emergency Calling
Sprint recommends that TTY users make emergency calls by other means, including
Telecommunications Relay Services (TRS), analog cellular, and landline communications.
Wireless TTY calls to 911 may be corrupted when received by public safety answering points
(PSAPs), rendering some communications unintelligible. The problem encountered appears
related to TTY equipment or software used by PSAPs. This matter has been brought to the
attention of the FCC, and the wireless industry and the PSAP community are currently working
to resolve this.
DDTM Mode
Select this option if you want to direct all calls to your voicemail when you are using data
connection.
Other CDMA Call Settings
Select these options to enhance voice privacy, prepend numbers automatically, or use plus
code dialing.
Settings
> Call > CDMA call
. Then
> Call > CDMA call
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