What is EMS text message? Is it MMS?

Everyone who uses a mobile phone can send text messages, but many people may not understand the differences between SMS, EMS, and MMS text messages. Here I will briefly introduce them to you.

SMS is the abbreviation of Short Messaging Service. It is a technology that can send and receive text messages using mobile devices. An SMS message can be up to 160 bytes (about 80 Chinese characters, because other related information must be sent, so the general SMS text message limit for Chinese is 70 Chinese characters), and a voice call of about 1 second It occupies quite a lot of space, so its communication cost is very low. The transmission of messages is always relayed by the SMSC (Short Messaging Service Center) outside GSM. Similar to emails, SMS text messages are only related to the user terminal and the SMSC. The well-known GSM and later networks all provide support for SMS.

EMS (Enhanced Message Service) is an enhanced version of SMS. It is a concept put forward by people at the beginning of the 21st century. The function of this service is that in addition to sending texts, it can also send simple messages. Information such as images, sounds and animations. There was already a concept of MMS at that time, but due to the limitation that MMS required the popularization of GPRS network or CDMA 2000 1X (2.5G network), SMS was designed as a transitional version from SMS to MMS. EMS can be sent on the GSM network. It should be said that it is a good technology for the transition from 2G network to 2.5G network. The biggest change required to support EMS is the operator's billing system, because the number of words occupied by images, sounds, animations, etc. may vary greatly, and operators need to carefully weigh it.

MMS is the abbreviation of Multimedia Messaging Service, which means multimedia messaging service in Chinese. This service is developed according to the standards of 3GPP and WAP Forum. In terminology, the multimedia SMS service is to transmit video clips, pictures, sounds and text using the WAP wireless application protocol as a carrier with the support of the GPRS network or the cdma2000 1X network. It supports a variety of high-speed data services such as voice, Internet browsing, email, and conference television, and realizes instant end-to-end mobile phone, mobile terminal to Internet, or Internet to mobile phone terminal multimedia information transmission. The emergence of this business can replace part of the functions of email and can be used as an electronic version of postcards, providing extremely rich service content. The biggest obstacle to the development of this kind of business is the speed limit of the current 2.5G network. The slow network speed directly leads to high tariffs. Although the price has dropped a lot, it is still beyond the reach of most users.