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.
Hence there is no "development" in the US in mobile messaging service.
Text messaging, or texting, is the act of composing and sending electronic messages, typically consisting of alphabetic and numeric characters, between two or more users of mobile devices, desktops/laptops, or other type of compatible computer.
Text messages may be sent over a cellular network, or may also be sent via an Internet connection.
As with emailing, in the 2010s, the sending of short informal messages has become an accepted part of many cultures.
This makes texting a quick and easy way to communicate with friends and colleagues, including in contexts where a call would be impolite or inappropriate (e.g., calling very late at night or when one knows the other person is busy with family or work activities).