A closeup picture of a phone keyboard. The acronym T9 stands for Text on 9 keys. T9 "predictive texting" is a tool used primarily on non-smartphones (those with just a nine-key keyboard similar to a ...
2don MSN
In 1991, Bellcore engineer Cliff Kushler devised T9 text entry, speeding up typing on mobile phones
Before T9, texting on mobile phones was a tedious affair, requiring multiple presses per letter. In 1991, Bellcore engineer ...
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