Text on 9 keys - A software that enables user to easily enter text into small devices like wireless phones, handheld computers and MP3 devices.

Whilst text messaging: Using just one key press per letter, T9® Text Input makes entering text on your mobile phone quick and easy

A feature built into many phones that allows you to use one key press per letter when entering text on your wireless phone. T9 helps make entering text on a limited keypad quick and easy.