This is the first time I've heard of T9 being used since we moved on from the old Nokia phones that pioneered T9! Bring back fond memories of my Nokia 3310 and 8210. But yeah it's odd to see T9 in the context of a touchscreen phone...
I think it's a pity it's gone. I've developed https://typenineapp.com for iPhone, since I couldn't get used to the small buttons on the qwerty keyboard. I would dare to say I type almost twice as fast as regular qwerty phone users, and even without the tactile feedback I can do so without looking.
I've had about 60.000 downloads, and I almost never see a bad review, so I'd say T9 on a touchscreen has a place.
