Is session oriented, unlike SMS, which is a store-and-forward, transaction-oriented technology. Turnaround response times for interactive applications are shorter for USSD than SMS because of the session-based feature of USSD, and because it is NOT a store and forward service. Most of the applications enabled by USSD are menu based and include services such as mobile prepay and chat.

An example of USSD game: Get your quote for the day and stand a chance to win airtime! Please dial  *120*777#  from your mobile phone.