One major way to achieve this is the use of USSD codes for different Nigerian banks. USSD, which means Unstructured Supplementary Service Data, is a communications protocol used by mobile phones to ...
Nigerian CommunicationWeek on MSN

Transfers fail as banks suffer USSD glitches

Nationwide Unstructured Supplementary Service Data (USSD) glitches are occurring because the Nigerian Communications Commission (NCC) and Central Bank of Nigeria (CBN) transitioned to an “End-User ...