What is USSD?
Unstructured Supplementary Service Data
USSD (Unstructured Supplementary Service Data) is a Global System for Mobile Communications (GSM) protocol that is used to send text messages. USSD is similar to Short Message Service (SMS).
USSD uses codes made up of the characters that are available on a mobile phone. A USSD message, which can be up to 182 characters long, establishes a real-time communication session between the phone and another device - typically, a network or server.
USSD can be used for Wireless Application Protocol (WAP) browsing, mobile money services, prepaid callback services, menu-based information services and location-based content services. (Source: https://searchnetworking.techtarget.com/definition/USSD).
Updated over 3 years ago