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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 ...
For GSM, UMTS and LTE networks, this number was provisioned in the SIM card and for cdmaOne and CDMA2000 networks, in the phone directly or in the R-UIM card (the CDMA equivalent of the SIM card). Both cards have been superseded by the UICC. An IMSI is usually presented as a 15-digit number but can be shorter.
A typical SIM card (mini-SIM with micro-SIM cutout) A SIM (Subscriber Identity Module) card 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).
However, by virtue of SIM Registration Act and due to deactivation of unregistered Globe SIM cards, the number of subscribers went down to 48.4 million as of July 26, 2023. [34] The company now becomes second to Smart Communications in terms of subscriber base which has 50.0 million.
Over-the-air provisioning (OTAP) is a form of OTA update by which cellular network operators can remotely provision a mobile phone (termed a client or mobile station in industry parlance) and update the cellular network settings stored on its SIM card. This can occur at any time while a phone is turned on.
SIM locking is not common in India. Initially, each state in India had a different mobile network operator and roaming across states was prohibitive. It was cheaper to change the SIM card than pay high roaming charges. The number of inter-state travelers demanded unlocked phones. Usually, phones and SIM cards are sold separately.
As of November 2023, Smart reported that it has 55.2 million subscribers following the implementation of SIM (subscriber identity module) card registration, which is slightly more than 54.7 million of close competitor Globe Telecom Inc., regaining its place as the mobile network with the largest subscriber base. [3]
TM was launched on September 12, 2001, as Touch Mobile, initially catering to the middle income market, and has since covered lower-income groups as well, making it Globe's value brand offering. [ 1 ] [ 2 ] [ 3 ] The service has gained popularity for its discounted call and messaging services, with the "All Network" offers allowing TM ...