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If the wrong PIN is entered more than three times, the SIM card will become locked. It can be unlocked by entering the PUK code provided by the mobile service provider, [1] which may be available on the SIM card's packaging, the contract, or provided by customer service after identity verification. After the PUK code is entered, the PIN must be ...
An "international call prefix", "international dial-out code" or "international direct dial code" (IDD code) is a trunk prefix that indicates an international phone call. In the dialling sequence, the prefix precedes the country calling code (and, further, the carrier code, if any, and the destination telephone number).
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 IMSI is often used as a key in the home location register ("subscriber database") and the MSISDN is the number normally dialed to connect a call to the mobile phone. A SIM has a unique IMSI that does not change, while the MSISDN can change in time, i.e. different MSISDNs can be associated with the SIM.
A SIM lock, simlock, network lock, carrier lock or (master) subsidy lock is a technical restriction built into GSM and CDMA [1] mobile phones by mobile phone manufacturers for use by service providers to restrict the use of these phones to specific countries and/or networks.
Airtel launched 4G services on mobile from February 2014. The first city to get the service was Bangalore. [24] [25] Airtel has started their 4G services in Karnal and Yamunanagar in Haryana on 16 June 2015. [26] Airtel 4G trials has been started in Delhi from 18 June 2015. [27] Airtel had 95,173,000 4G subscribers as of June 2019. [28]
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.
Airtel Tanzania is the market leader with a 38% market share. [85] Uganda: airtel Uganda: Airtel Uganda stands as the No. 2 operator with a market share of 38%. [85] Zambia: airtel Zambia Airtel Zambia is the second market leader in Zambia with a 40% market share of the mobile network sector. [91] Channel Islands † : Jersey Guernsey: Airtel ...