HTC 10 Sprint - Manual (Page 111)

Phone Calls and Voicemail 98
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 TTY
calls to 9-1-1 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.
1. Tap > > Settings.
2. Tap Call.
3. Tap CDMA call settings and select or customize these options.
 Voice Privacy: Select to enable enhanced privacy mode.
 Automatic prepend: Select to automatically add "1" for long distance calls.
 Plus code dialing: Tap to set plus code dialing. See Place and Answer Calls for details.