- 1 Discover what does phone sim card do priceline.com/search Find Awesome Results For what does phone sim card do!
- 2 Search: what does phone sim card do amazon.com/deals Find what does phone sim card do on amazon.com.
- 3 what does phone sim card do - Wikipedia - Learn about what does phone en.wikipedia.org/wiki The history of what does phone sim card do describes the efforts in the 1970s and 1980s to build small...
Some phones need a SIM card in order to identify the owner and communicate with the mobile network. So, if you have, say, an iPhone on Verizon's network, it needs a SIM card so that Verizon knows that the phone belongs to you and that you're paying for the subscription, but also so that certain features will work.
A SIM card is otherwise known as a subscriber identity module and is used in smartphones globally. It is a smart card which stores data for subscribers of GSM cellular phones.
Often, a SIM card is provided with the purchase of a phone by your carrier and it is used to store data about your account. Because it has a small amount of memory and a very low-powered processor, the SIM card not only enables communication between the phone and its carrier, but stores information such as phone numbers, security data and more.
The SIM card in a cell phone contains a unique identification number that identifies the owner of the phone and the cellular network that the owner is subscribed to. This allows the cellular subscriber to use the communication features of a specific device.
A SIM card, also known as a subscriber identity module, is a smart card that stores identification information that pinpoints a smartphone to a specific mobile network. Data that SIM cards contain include user identity, location and phone number, network authorization data, personal security keys, contact lists and stored text messages.
Your SIM card packs all your contacts, text messages and subscriber information into 64 kilobytes of memory. That’s a laughably tiny amount of memory, but it does the trick. For reference, the Apollo Guidance Computer used for the first Moon landings also had 64KB of memory. So, you’re in pretty good company.