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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.
There are 4 pay-for-use DTH service providers and one free-to-air service provider (DD Free Dish) in India. [1]As of 31th March 2024, there are 61.97 million active paying DTH subscribers, in addition to the subscribers of state-owned DD Free Dish, in the country according to Telecom Regulatory Authority of India (TRAI).
Vodafone Idea, in acronym Vi, is an Indian telecommunications company with its headquarters based in Mumbai and Gandhinagar. [ 6 ] [ 7 ] [ 8 ] It is an all-India integrated GSM operator offering mobile telephony services .
Unstructured Supplementary Service Data(USSD), sometimes referred to as "quick codes" or "feature codes", is a communications protocolused by GSMcellular telephonesto communicate with the mobile network operator's computers. USSD can be used for WAPbrowsing, prepaid callback service, mobile-money services, location-based content services, menu ...
Prepaid mobile phone. A prepaid mobile device, also known as a pay-as-you-go (PAYG), pay-as-you-talk, pay and go, go-phone, prepay, or burner phone, is a mobile device such as a phone for which credit is purchased in advance of service use. The purchased credit is used to pay for telecommunications services at the point the service is accessed ...
Quick Charge. Quick Charge (QC) is a proprietary battery charging protocol developed by Qualcomm, used for managing power delivered over USB, mainly by communicating to the power supply and negotiating a voltage. Quick Charge is supported by devices such as mobile phones which run on Qualcomm system-on-chip (SoCs), and by some chargers; both ...
Fixed Dialing Number. Fixed Dialing Number (FDN) is a service mode of a GSM mobile phone 's SIM card. [1] Numbers are added to the FDN list, and when activated, FDN restricts outgoing calls to only those numbers listed, or to numbers with certain prefixes. [1] A notable exception is that emergency calls to 000, 112, 911, 999 and the like are ...
Closed User group (CUG) is a supplementary service provided by the mobile operators to mobile subscribers who can make and receive calls from any member associated within the group. This service is applicable for SMS also. There will be administrative owner who will be responsible for invoicing. Irrespective of this a CUG member can make and ...