Predictive text input is not available in all languages.
Select
> Input options > Activate prediction.
is shown.
Start writing a word.
To see suggestions for possible words, select the word you're writing. When the correct word is shown, select the word.
If the word is not in the dictionary, the phone suggests an alternative word from the dictionary. To add the new word to the dictionary, select the word you have written.
Select
> Input options > Deactivate prediction.
Select
> Input options > Settings.