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Contents: MMS vs SMS. Definitions. SMS is the abbreviation for Short Message Service and is the text communication service component of a phone or mobile communication system, using standardized communications protocols that allow the exchange of short text messages between fixed line or mobile phone devices.
SMS and MMS have some distinct differences in what they can contain. SMSâ stands for âshort message serviceâ and is descriptive of the strictly text-based messages that is used with mobile devices. All text messages sent from a mobile phone are considered SMS messages. Sending messages to a group is bulk SMS messaging.