Samsung Z400 User Manual
Page 88
 
72
To turn TTY Mode on or off:
1.
Press
Menu > Settings > More... > Accessibility > TTY
(An informational message will be displayed.)
2.
Press .
3.
Select
TTY Full
,
TTY + Hear
, or
TTY + Talk
to turn TTY
mode on.
– or –
Select
TTY Off
to turn TTY mode off.
Note
In TTY Mode, when your phone is connected to a 
headset, it will display the TTY access icon. 
If TTY mode is enabled, the audio quality of non-TTY 
devices connected to the headset jack may be 
impaired.
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.
Z400.book Page 72 Monday, April 7, 2008 8:06 PM