SMS

You can send short notes on a phone.

These notes are called texts. They travel through phone networks to a friend. One text can have 160 letters. The very first text said "Merry Christmas."

People use texts to talk to friends. They also use them for banking. Some people use them to vote on TV. It is a very popular way to talk. Do you like to send texts?

SMS is a way to send short text messages.

Most mobile phones and internet devices use it. It works through cellular networks. These are the systems that connect your phone to the world.

One message can have up to 160 characters. A character is a single letter, number, or symbol.

Engineers made SMS to use paths that were already there. They used the same paths that control phone calls. This helped send messages at a low cost. This was done by using parts of the system that were not being used.

The very first SMS was sent on December 3, 1992. A man named Neil Papworth sent it from a computer. The message said "Merry Christmas."

People use SMS for many things today. They use it to talk to friends. It is also used for mobile banking and voting. Some people even use it for marketing. Newer services like WhatsApp now compete with SMS. However, SMS is still a very popular tool worldwide.

SMS is a way to send short text messages between devices.

It is a part of most mobile phone and internet systems. These messages usually travel across cellular networks. The service allows people to send up to 160 characters at once. A character can be a letter, a number, or a symbol. This limit was chosen so messages would fit into existing systems.

Today, SMS works on many networks, including the new 5G ones.

Sending a message works by using paths that are already there. Engineers wanted to use the signaling paths that control phone calls. These paths are used to manage telephone traffic. When there is no signaling traffic, these resources are unused. SMS uses these empty spaces to move messages at a low cost. This way, the system does not need to build brand new paths. Messages can also travel over the internet using special gateways.

People worked together for many years to build this technology. In 1984, Friedhelm Hillebrand and Bernard Ghillebaert developed the SMS concept. They worked through a group called GSM. They wanted to make sure messages could be sent and acknowledged. In 1985, a proposal for SMS was made in Oslo, Norway. Later, a group led by Finn Trosby worked on the technical rules. The first real SMS message was sent on December 3, 1992. Neil Papworth sent the words "Merry Christmas" from a computer.

SMS grew very quickly around the whole world. By the end of 2010, it had about 3.5 billion active users. This was about 80% of all people with mobile phones. In 2002, people sent 366 billion messages globally. By 2010, that number rose to 6.1 trillion messages. The Philippines became known as the "texting capital of the world" in 2001. In the United States, adoption was slower at first. This was because many people had cheap voice calls instead.

We use SMS for many things in our daily lives. It is not just for chatting with friends. Businesses use it for mobile marketing to reach customers. It is also used for mobile banking and televoting. Many websites use it for two-factor authentication to keep accounts safe. Later, a newer version called MMS was made to send pictures. Now, newer apps like WhatsApp and WeChat are very popular. However, SMS remains a huge and important part of how we connect.

Short Message Service, commonly known as SMS, is a text messaging component used in most telephone and mobile device systems.

It uses standardized communication protocols to allow mobile phones to exchange short text messages. These messages are typically transmitted over cellular networks. While it started as a way for carriers to send alerts to customers, it has become a global method for personal and commercial communication. Today, SMS is supported on modern networks, including 5G technology. It even works across different systems, such as computers and landlines, through the use of SMS gateways and a Short Message Service Centre (SMSC).

The mechanism of SMS is quite clever because it uses existing resources. Engineers designed SMS to travel along the signaling paths used to control telephone traffic. In a cellular network, signaling paths are necessary to manage calls, but they are often unused during periods of no activity. By transporting messages through these empty spaces, the system can move data at a minimal cost. To ensure these messages fit into the existing signaling formats, the length was limited. Initially, messages were restricted to 128 bytes. This was later improved to allow for 160 seven-bit characters. Friedhelm Hillebrand, one of the creators, chose this 160-character limit after observing the typical lengths of postcards and Telex messages.

There are different ways a message can be handled within the network. One type is Short Message Mobile-Terminated (SMS-MT), which is a point-to-point service where the network transmits a message to a mobile phone. This can be done by a person or a software application. Another type is Short Message Mobile-Originated (SMS-MO), which is the ability of a network to transmit a message that was sent from a mobile phone. There is also a third type called cell broadcast. These different methods allow for both direct person-to-person texting and automated system alerts.

The history of SMS began with radio telegraphy and radio memo pagers. The formal development of the SMS concept occurred in 1984 through Franco-German cooperation. Friedhelm Hillebrand and Bernard Ghillebaert developed the idea within the Global System for Mobile Communications (GSM) framework. In 1985, a proposal for SMS was presented during a GSM group meeting in Oslo, Norway. Later, a drafting group led by Finn Trosby established the technical design. The very first SMS message was sent on December 3, 1992. Neil Papworth, a test engineer, sent the message "Merry Christmas" from a computer to Richard Jarvis, who received it on an Orbitel 901 phone.

SMS saw massive growth in adoption across the globe. In 1995, the average user sent only 0.4 messages per month. However, by the end of 2000, that average reached 35 messages per user per month. By the end of 2010, SMS was the most widely used data application in the world. It had an estimated 3.5 billion active users, which represented about 80% of all mobile phone subscribers. The scale of usage is enormous; in 2002, 366 billion messages were sent globally. By 2010, that number had climbed to 6.1 trillion messages per year.

The service has many different uses beyond simple chatting. It is a major commercial tool used for mobile marketing and mobile banking. Many people use it for two-factor authentication to secure their digital accounts. It is also used for televoting and other types of commercial content. The popularity of the service even led to the creation of "SMS language," where people shorten words to fit the 160-character limit. Later, the Multimedia Messaging Service (MMS) was introduced as an upgrade to allow for picture and video messaging.

While SMS is still vital, it faces new challenges in the modern era. Many people now use Internet Protocol-based instant messaging services like WhatsApp, Telegram, or WeChat. These newer services run independently from mobile network operators. However, SMS remains a unique standard because it can provide cross-platform messaging that works across different types of devices and networks. As the industry moves forward, a new standard called RCS is being designated as the potential open successor to SMS.