Text message

The Eleventh Doctor cited text messages as a method of communication. (TV: The Power of Three)

The Eighth Doctor felt that intonation, as in speech, was conveyed in a text message with "those little faces" and via "amusing punctuation". When he asked Liv Chenka how Tania Bell "sounded" in a text communication, Liv had him look for himself. They both agreed that her tone was stern. (AUDIO: Dead Time)