[spicytunacone]

I wouldn't even say smartphone keyboards are strictly better than those of feature phones. Ones based on physical keyboards expecting fingers on the homerow aren't suited for one-handed use. Meanwhile dumbphones get tactile feedback on top of T9 (introduced to me in highschool by a girl who was upset by my "slow" replies prior).

It seems the parent has luck with word drawing, but I remember looking into alternative keyboards a couple years ago and not being impressed. The most enjoyable and fastest writing I've done on a mobile device is with 10-key Japanese input[0]. Unfortunately I do not regularly talk to anyone in Japanese.

[0]: Couldn't find a good article or webpage on this. You can hopefully grasp the core concept from http://miku.sega.jp/flick/en/. Since Japanese phonetics all end in -a, -e, -i, -o, -u with the exception of ん ~ n, the flick directions are symmetric. Coupled with how more than decent Japanese IME is and a few extra keys to navigate the suggestions, modifiers and other common input (brackets, commas, etc. operated by the same flick motions) you can get very fast and precise. I don't get to use it often, but it's a joy when I do. They even made a game out of it :)