All Nokia models with a numeric keypad support T9. By nature T9 is not suitable nor needed for any devices with FullTouch or physical QWERTY keyboards.
What device(s) are you referring to?
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I think the post above you is making reference to the Nokia N9, while I appreciate what you say about touch screens with full qwerty boards needn't have T9 Alphanumeric keypads, but it's a standard that many of us have adopted and would be great if Nokia wrote one last program for the Nokia N9, that being T9 input for text,ect.
elo, im agree if nokia put t9 keyboard bcos how far u going. U should remember the past i like nokia start from 3310 becouse t9 keyboard. I hope nokia can update imediately t9 keyboard in windows8(lumia 620)
tq,i luf n suport nokia