The first text message was sent in December 1992.
It read, "Merry Christmas," and it was sent by British engineer Neil Papworth to the head of telecommunications company Vodafone as the company celebrated its Christmas party.
At the time, phones could only receive messages, so it was sent using a computer.
Experts describe it as the first step toward the modern smartphone.
"I never got a free beer out of it or anything like that, but I'm proud, and I'm happy that I did what I did," said Papworth.
It took nearly a year to develop the technology for phones to also send text messages.
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