Two of the most frequently used methods of cellular communication worldwide are Short Message Service, or SMS, and Multimedia Messaging Service, or MMS, messages. The impact of text and and multimedia messaging has been so far-reaching that cellphones have evolved in design to feature full push-button or virtual QWERTY keyboards to accommodate the growing demands of text messaging. Though similar, there are several distinct differences between SMS and MMS messages, including what type of information is transmitted, the file size of your message, and how your phone processes the message in transit. Writer Bio