Mar 04 2011

What is a SIM card?

Category: Cell Phones


SIM cardA SIM card or Subscriber Identity Module card is a miniature encoded removable storage device that can be interchanged with most GSM technology based cell phones. They typically hold specific information about a particular carrier as well as other secure user information like billing and contact lists. Some cell phone providers offer phones in a locked condition which means they can only be used with one particular carrier, one country, or one specific SIM card. Using an unlocked phone frees these restrictions and gives you the freedom to interchange your SIM card.

Tags: , , , ,



Challenge this Answer and/or Discuss