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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.
Roaming fees are typically charged on a per-minute basis for wireless voice service, per text message sent and received and per megabyte of data used for data service, and they are typically determined by the service provider's pricing plan.
Mobile virtual network operators (MVNOs) in the United States lease wireless telephone and data service from the four major cellular carriers in the country—AT&T Mobility, Boost Mobile, T-Mobile US, and Verizon—and offer various levels of free and/or paid talk, text and data services to their customers.
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.
8-10: Vodafone: 6 to 8 digits 22: 9: 2degrees: 7 digits 24? Unused: Protected by Management Committee on 30 January 2009 to preserve the potential code expansion option. 25: 8-9: Unused: 6-7 digits - Was used by Telecom New Zealand (now called Spark) until it was shut down on 31 March 2007. All numbers have now migrated to 027 (7-digit) and ...
TADIG code is a number uniquely identifying network operators in a GSM mobile network. The acronym TADIG expands to " Transferred Account Data Interchange Group ". According to the GSM specification, the codes are used as "primary identifiers within file contents and file names" in multiple file formats defined by the GSMA . [ 1 ]
USSD Phase 1, as specified in GSM 02.90, only supports mobile-initiated ("pull") operations. [8] In the core network, the message is delivered over MAP, USSD Phase 2, as specified in GSM 03.90. [9] After entering a USSD code on a GSM handset, the reply from the GSM operator is displayed within a few seconds.
MVNO on CSL network; network code operational only at land borders and Airport to attract inbound roamers to join 454-00 454: 02: CSL Limited: Not operational: GSM 900 / GSM 1800: Network code operational only at land borders and Airport to attract inbound roamers to join 454-00; shut down Nov 2024 [27] 454: 03: 3: Hutchison Telecom: Operational