Why one letter could take several presses
Early mobile phones usually had a numeric keypad, not a miniature QWERTY keyboard. Each number key stood for several letters: the 2 key, for example, could enter A, B, or C. To type a B, you pressed 2 twice; to type a C, three times. The method became known as multi-tap.
The phone had to work out when you were done cycling through the letters on a key. You could pause, or press a different key to move on. But two letters in a row that shared a key—such as the two O’s in “book”—needed extra care: wait for the phone to register the first letter, or use a navigation control to advance. A mistimed press could replace a letter instead of adding one.
Speed came from timing as much as dexterity
Frequent texters learned the keypad’s letter groups and the rhythm of its pauses. That made it possible to compose messages without looking closely at the screen, though typing from inside a pocket was a separate challenge: the keys were small, and a misplaced press could send the text off course. Shortened spellings also helped keep messages brief and reduced the number of presses.
Multi-tap was not the only way to type on a phone. Some keypad phones offered predictive text, which used a word list to guess a word from a sequence of key presses. Later, touchscreens made it practical to show a full keyboard, while software suggestions and autocorrect tried to anticipate what the typist meant. Those tools reduced repetitive tapping, but they introduced a new kind of mistake: a polished-looking message with the wrong word. The change was from managing key presses to checking what the software thought you meant.
