MMS

The MMS specification allows for the creation of messages sent from one mobile phone to another that can contain text, pictures, audio, and video that can be optionally organized into slides in a presentation. Unlike SMS and EMS, the MMS system relies on 2.5G, or newer, data connectivity technologies such as GPRS and 1xRTT. As such, the configuration required for its use is often far more complicated than that of SMS. CDMA based networks and devices, such as those offered by Verizon Wireless and Sprint in the USA, generally do not support the full gamut of MMS functionality, and often offer what is simply called Picture Messaging. Such services typically function similar to email in that pictures and videos are merely attached to a text based message instead of integrated into a full presentation.
Also known as: "Multimedia Messaging Service", "picture messaging"

MMC
MVNO (Mobile Virtual Network Operator)

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