How can I add new words to the T9 predictive text input dictionary?
Some mobile phones will let you add new words to the T9 user dictionary, but not all phones with T9 text input provide this feature. If your mobile phone has a T9 user dictionary, you can add a word while using T9 text input. First switch from T9 mode to multi-tap (ABC) mode, type the word using multi-tap, then switch back to T9 mode. The word will be stored in the dictionary. You can also see your phone’s documentation for instructions on adding words to the T9 dictionary.