Palm 650 User Manual page 189

5.
Select OK. A red T appears at the top of the Phone screen whenever TTY is
enabled.
Important
Notice:
Section 3A: Sprint PCS Service Features—The Basics
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.
TTY Enabled
177