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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 Messaging and MMS Differences. There are several differences in SMS and MMS messaging. Bulk SMS messages are sent via cellular networks and are started by the message transferring to something call a short message service center or SMSC for short. The SMSC then attempts to send the messages to the recipients.