Coding problem — T9 Keyboard. Given a string containing digits from… | by thebytestream | Medium
Tappy: Android T9 Keyboard
How to: use T9-style keypad input on Belle Feature Pack 2
T9 keyboard by coffeykurt - Issuu
Old keyboard - Apps on Google Play
I've never used a T9 keyboard before, so I'm learning it on my iPhone before I switch to a Nokia later next month. That way, I can utilize typing tests easier :
Torvaney | Optimising the T9 keyboard
Type Nine - The ultimate t9 style iOS keyboard
Old T9 Keyboard - Apps on Google Play
T9 (predictive text) - Wikipedia
How I ported T9 Predictive Text to run on a microcontroller - YouTube