Unstructured Supplementary Service Data (USSD) is a technology that allows you to communicate with your service provider using short codes. It usually consists of a number that starts with * and ends with #. You can query various services on this page.
USSD Request - USSD codes supported by the carrier.
USSD Response - Messages returned from the carrier.
Note: USSD request can't be sent in the 4G Only mode. You can go to "Advanced -> Network Settings" to change it.
Click Send to send USSD request.
Click Cancel to cancel USSD session.