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People could only send text messages to someone with the same mobile provider until companies figured out how to allow texting across providers.
Friedhelm Hillebrand figured out that most ideas could be expressed in about 160 characters, which paved the way for text messaging.
Long phone conversations have become things of the past for many people, as they now send text messages using abbreviations like "lol" and "brb."
Richard Jarvis was the first person to receive a text message after his friend Neil Papworth sent him the message "Merry Christmas" in 1992.