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USSD on a Sony Ericsson mobile phone (2005). Unstructured Supplementary Service Data (USSD), sometimes referred to as "quick codes" or "feature codes", is a communications protocol used by GSM cellular telephones to communicate with the mobile network operator's computers.
ETSI and 3rd Generation Partnership Project (3GPP) standards, such as GSM and LTE, define supplementary service codes that make it possible to query and set certain service parameters (e.g., call forwarding) directly from mobile devices.
This list contains the mobile country codes and mobile network codes for networks with country codes between 300 and 399, inclusively – a region that covers North America and the Caribbean. Guam and the Northern Mariana Islands are included in this region as parts of the United States.
An additional digit has been added to the code of every carrier. Making a single code per carrier, after each carrier had to have multiple codes. And making the NSN 10 digits after it was 9. Dialing format inside Egypt is 01X XXXX XXXX, International format is 20 1X XXXX XXXX; 11: Etisalat: 12: Orange Egypt: 15: WE Egypt El Salvador +503: 6: 8
The user interface technology of M-PESA differs between Safaricom of Kenya and Vodacom of Tanzania, although the underlying platform is the same. While Safaricom uses SIM toolkit (STK) to provide handset menus for accessing the service, Vodacom relies mostly on USSD to provide users with menus, but also supports STK. [23]
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Area Code Area/City 21: Maputo 23: Beira 24: Quelimane 251: Manica 252: Tete 258: ... Vodacom 86: Movitel: 87: Movitel 89: reserved References This page was last ...
In mobile telephony GSM 03.38 or 3GPP 23.038 is a character encoding used in GSM networks for SMS (Short Message Service), CB (Cell Broadcast) and USSD (Unstructured Supplementary Service Data).