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Unstructured Supplementary Service Data

March 01 2025 , by Stephanie Burrell
1 min reading time

Unstructured Supplementary Service Data (USSD) is a technology that allows mobile phone users to interact with a service provider's computer system through a series of short codes. This communication method is widely used by telecommunications companies to provide services such as balance checking, mobile top-ups, and mobile banking.

USSD is different from SMS (Short Message Service) in that it does not require a mobile data connection to function. Instead, USSD messages are transmitted over the signaling channels used for voice calls, making it a more reliable and faster way to communicate with a service provider.

One of the key advantages of USSD is its simplicity and ease of use. Users can access services by dialing a short code on their mobile phone, without the need to download any apps or navigate through complex menus. This makes USSD an ideal communication channel for users who may not have access to smartphones or mobile data.

Another benefit of USSD is its real-time responsiveness. When a user sends a USSD message, the service provider's computer system processes the request immediately, providing instant feedback to the user. This real-time interaction is particularly useful for time-sensitive transactions, such as mobile top-ups or balance inquiries.

USSD is also a cost-effective communication channel for service providers. Unlike SMS or mobile data, USSD messages are charged at a flat rate per session, making it a more affordable option for both the service provider and the end user. This cost-effective nature of USSD has made it a popular choice for mobile operators looking to offer value-added services to their customers.

In conclusion, Unstructured Supplementary Service Data (USSD) is a versatile and efficient communication technology that allows mobile phone users to interact with service providers in real-time. Its simplicity, cost-effectiveness, and instant responsiveness make it an ideal channel for a wide range of services, from mobile banking to balance inquiries. As mobile usage continues to grow globally, USSD is likely to play an increasingly important role in providing convenient and accessible services to users around the world.