SIM Cards Support Information

SIM CARDS INFORMATION

SIM :- Subscriber Identity Module.

SIM Cards are available size :- There are Certain types of phones(CDMA, TDMA, AMPS) that do not use a SIM. Instead, the required data is programmed directly into the phone.

1. SIM Full Size :- Width - 85.6 mm, Height - 53.98 mm, Thickness - 0.76 mm
2. Mini SIM       :- Width - 25.0 mm, Height - 15.0 mm, Thickness - 0.76 mm
3. Micro SIM     :- Width - 15.0 mm, Height - 12.0 mm, Thickness - 0.76 mm
4. Nano SIM      :- Width - 12.3 mm, Height - 8.8 mm, Thickness - 0.67 mm

 Info :- A Subscriber Identity Module on a removable SIM Card securely stores the service-subscriber key International Mobile Subscriber Identity (IMSI) used to identify a subscriber on mobile telephony devices (Such as computers and mobile phones). The SIM Card allows users to change phones by simply removing the SIM Card from one mobile phone and inserting it into another mobile phone or broadband telephony device.
SIM Cards are available in two standard sizes. The first is the size of a Credit Card. The newer, more popular miniature-version has a width of 25 mm, a height of 15 mm, and a thickness of 0.76 mm. However most SIM Cards are supplied as a full-sized card with the smaller card held in place by a few plastic links and can be easily broken off to used in a phone that uses the smaller SIM.

SIM Cards also serve as storage for SMS Messages and the user's contacts. Current SIM Cards can store up to 250 Name / Numbers pairs and up to 50 SMS text Message.