T9 stands for text on nine keys. Before cell phones had full keyboards, many phones had 12 keys. These were for the numbers zero to nine, star and the pound sign or hashtag -- I felt old just ...

T9 is the most popular. iTAP is used by Motorola in some (but not all) of its own phones. Still confused? Spot a mistake? Give us your feedback on this definition.

Samsung stands tall in the electronics world thanks to its mobile phones and tablets ... and reviewer-favorite peripherals including the T9 Portable Solid-State Drive, the 4TB version of which ...