Typing is one of the most common things we do on our mobile phones. A recent survey suggests that Millennials spend 48 minutes each day texting, while boomers spend 30 minutes. Since the advent of ...

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 ...