T9

Just yesterday I was texting while traveling in a qinqi (It's a three-wheeler sort Richshaw) and I remembered that one time when I was texting in train, and I had made a friend. He saw me texting and asked me how did I use the predictive text to type so fast, and then the rest of some time was spend me explaining him, showing him, and also showing him how some desi words could also be entered into the list of supported words. So, back to the qinqi. I was thinking, what if that day, that guy had asked me the name of that functionality, and what if I had said, it's called T9. And he would have asked, why is it called T9? Then I wouldn't have any answer. And though I am very comfortable with having no answers, and saying I don't know. But I got curios for my own sake, and decided to look at up. So if you don't know what T9 means, here it is for you: Text on 9 keys. Haha... so predictive.