1,111,111 TRP = 11,111 USD
1,111,111 TRP = 11,111 USD
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Was about switching my glo sim card today from my old phone to the new one, then my eyes when on the sim body; i saw this SIM card. And being honest, from the time i started using a phone i don’t know what is the meaning of sim card.
Please share your answer should you have idea about what it means.
A sim card is a smart card inside a mobile phone, carrying an identification number unique to the owner, storing personal data, and preventing operation if removed with an abbreviation of subscriber identification module.
The SIM card is the personal authorization for the phones use on a network. It contains the payers ID and a link to that account.
A subscriber identity module or subscriber identification module, widely known as a SIM card, is an integrated circuit that is intended to securely store the international mobile subscriber identity number and its related key, which are used to identify and authenticate subscribers on mobile telephony devices.
What information does a SIM card hold? The most important bits of data include the IMSI (International Mobile Subscriber Identity) and the authentication key that validates the IMSI. The carrier provides this key.
SIM authentication goes like this:
On startup, the phone obtains the IMSI from the SIM card and relays it to the network. Think of this as the “request for access.”
The network takes the IMSI and looks in its internal database for that IMSI’s known authentication key.
The network generates a random number, A, and signs it with the authentication key to create a new number, B. This is the response it would expect if the SIM card is legitimate.
The phone receives A from the network and forwards it to the SIM card, which signs it with its own authentication key to create a new number, C. This number is relayed back to the network.
If the network’s number A matches the SIM card’s number C, then the SIM card is declared legitimate and access is granted.
Long story short: this data not only determines which network to connect to but also acts as the “login credentials” which allow a phone to use said network.
Subscriber Identity Module is a small card in a mobile phone that allows you to use the phone and stores phone numbers.
Definition of SIM card. : a card that is inserted into a device (such as a cell phone) and that is used to identify a subscriber on a communications network and to store data (such as phone numbers or contact information)A SIM card is a microchip in a mobile phone that connects it to a particular phone network. SIM is an abbreviation for ‘Subscriber Identity Module’.
A sim card inside a phone,carrying an identification number unique to the owner,storing personal date and preventing operation if removed..