What's the difference between SMS, EMS and MMS?

SMS is the abbreviation of short message service, which is a technology that can send and receive text messages using mobile devices. The maximum length of a short message is 160 bytes (about 80 Chinese characters, so short messages are usually limited to 70 Chinese characters because other related information has to be sent), which is equivalent to the space occupied by a voice call of about 1 second, so its communication cost is very low. The transmission of messages is always relayed by SMSC (Short Message Service Center) outside GSM. Similar to e-mail, SMS messages are only related to the user terminal and SMSC. The well-known GSM and later networks are the earliest short message service of SMS (Short Message Service) and the most popular short message service now. At present, the length of this short message is limited to 140 bytes, which can be text. Short message is welcomed by the public because of its simple and convenient use function, but it is always the first generation of wireless data service, and its content and application are limited by technical standards.

EMS (enhanced short message service) means enhanced short message service in Chinese. Compared with the traditional text message SMS, its advantage is that it can not only send text messages like SMS, but also send simple information such as images, sounds and animations. Translate MMS (Multimedia Message Service) into multimedia short message service. China Mobile Company named it "MMS", which can be used to transmit multimedia information such as text, pictures, animation, audio and video. SMS provides support.

MMS in MMS short message is the abbreviation of multimedia message service, and Chinese translation is multimedia short message service. China Mobile Company named it "MMS", which can be used to transmit multimedia information such as text, pictures, animation, audio and video.

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