What's the difference between MMS and SMS?
SMS stands for Short Message Service, and it limited to 160 characters of plain text and links. This type of messaging is available on all of our phone plans (Do, Dream, Discover). MMS stands for Multimedia Messaging Service and can include up 1600 characters as well as multimedia content like images, videos, GIFs, etc. MMS does not include voice messaging or RCS messaging. MMS messaging is available on our Discover plan.