33BasicsTTY Use With Sprint PCS Service From SprintA TTY (also known as a TDD or Text Telephone), is atelecommunications device that allows people who aredeaf or hard of hearing, or who have speech or languagedisabilities, to communicate by telephone.Your phone is compatible with select TTY devices. Pleasecheck with the manufacturer of your TTY device forconnectivity information and to ensure that the TTYdevice supports digital wireless transmission.When establishing your Sprint PCS Service, please callSprint Customer Service via the state TelecommunicationsRelay Service (TRS) by first dialing .Then provide the state TRS with this number: 866-727-4889.To turn TTY mode on or off:1. Press .2. Press to continue.3. Press up or down to select Enable TTY or DisableTTY and press .For additional information and instructions regardingTTY use, please see your phone’s online User’s Guide atwww.sprintpcs.com.IMPORTANTNOTICE:Sprint recommends that TTY users make emergencycalls by other means including TelecommunicationsRelay Services (TRS), analog cellular, and landlinecommunications. Wireless TTY calls to 911 may becorrupted when received by public safety answeringpoints (PSAPs) rendering some communicationsunintelligible.