Nokia PCS VI-3155I User Manual page 33

Your phone's external LCD display allows you to
monitor the phone's status and to see who's calling
without opening the phone.
T9 Text Input lets you quickly type messages with one
key press per letter (page 35).
Speed dialing lets you dial phone numbers with one
key press (page 33).
Section 2A: Your Sprint PCS Phone: The Basics 21