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A SIM swap scam (also known as port-out scam, SIM splitting, [1] simjacking, and SIM swapping) [2] is a type of account takeover fraud that generally targets a weakness in two-factor authentication and two-step verification in which the second factor or step is a text message (SMS) or call placed to a mobile telephone.
In some cases, a SIM-locked handset is sold at a substantially lower price than an unlocked one, because the service provider expects income through its service. SIM locks are employed on cheaper (pay-as-you-go) handsets, while discounts on more expensive handsets require a subscription that provides guaranteed income. Unlocked handsets have a ...
A typical SIM card (mini-SIM with micro-SIM cutout) A SIM card or SIM (Subscriber Identity Module) is an integrated circuit (IC) intended to securely store an international mobile subscriber identity (IMSI) number and its related key, which are used to identify and authenticate subscribers on mobile telephone devices (such as mobile phones and laptops).
The user sends a request to the network via USSD, and the network replies with an acknowledgement of receipt: "Thank you, your message is being processed. A message will be sent to your phone." Subsequently, one or more mobile terminated SMS messages communicate the status and/or results of the initial request. [5]
Airtel had also rolled out its Voice over LTE (VoLTE) technology across all Indian telecom circles. [6] It is the second largest mobile network operator in India and the second largest mobile network operator in the world. [4] Airtel was named India's 2nd most valuable brand in the first ever Brandz ranking by Millward Brown and WPP plc. [7]
Airtel had 95,173,000 4G subscribers as of June 2019. [28] As of June 2019, Airtel provides 4G coverage in all India in 22 circles. [29] Airtel extended its 4G network to 15 km off India's coastline, following a request by the Indian Navy. [30] Airtel started its 4G in Andaman and Nicobar on 15 January 2019. [29]
In telecommunication, a public land mobile network (PLMN) is a combination of wireless communication services offered by a specific operator in a specific country. [1] [2] A PLMN typically consists of several cellular technologies like GSM/2G, UMTS/3G, LTE/4G, NR/5G, offered by a single operator within a given country, often referred to as a cellular network.
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