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Like e-mail and voice mail, and unlike calls (in which the caller hopes to speak directly with the recipient), texting does not require the caller and recipient to both be free at the same moment; this permits communication even between busy individuals.

Text messages can also be used to interact with automated systems, for example, to order products or services from e-commerce websites, or to participate in online contests.

The electrical telegraph systems, developed in the early 19th century, used simple electrical signals to sent text messages.

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Sitting at a typewriter at home, Hillebrand typed out random sentences and counted every letter, number, punctuation, and space.

Almost every time, the messages contained fewer than 160 characters, thus giving the basis for the limit one could type via text messaging.

GSM was allowed in the United States and the radio frequencies were blocked and awarded to US "Carriers" to use US technology.

Hence there is no "development" in the US in mobile messaging service.

The GSM in the US had to use a frequency allocated for private communication services (PCS) – what the ITU frequency régime had blocked for DECT – Digital Enhanced Cordless Telecommunications – 1000-feet range picocell, but survived.

American Personal Communications (APC), the first GSM carrier in America, provided the first text-messaging service in the United States.

Sprint Telecommunications Venture, a partnership of Sprint Corp. made the initial phone-call to launch the network, calling Mayor Kurt Schmoke in Baltimore.

and three large cable-TV companies, owned 49 percent of APC. One factor in the slow take-up of SMS was that operators were slow to set up charging systems, especially for prepaid subscribers, and to eliminate billing fraud, which was possible by changing SMSC settings on individual handsets to use the SMSCs of other operators.

E-mail messaging from phones, as popularized by NTT Docomo's i-mode and the RIM Black Berry, also typically use standard mail protocols such as SMTP over TCP/IP.

text messaging was the most widely used mobile data service, with 74% of all mobile phone users worldwide, or 2.4 billion out of 3.3 billion phone subscribers, at the end of 2007 being active users of the Short Message Service.

Texting is also used to communicate very brief messages, such as informing someone that you will be late or reminding a friend or colleague about a meeting.

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