SIM stands for "subscriber identity module." SIM cards are used in all mobile phones, and they allow a network to recognize phones that have subscriptions to that network. SIM cards allow users to transfer their personal... More »

The abbreviation VA stands for the state of Virginia in the United States of America. It became the 10th state to join the Union on June 25, 1788. This state is the 35th largest when compared to all other states in the U... More »

APA is the abbreviation for the American Psychological Association. It is often used to refer to a standard set of rules for writing. More » Business & Finance Corporations

Some SIM card only deals for cell phones are available from and Additional deals for SIM cards can be found on All three sites allow users to compare a variety of ... More » Technology Mobile

When a cell phone says that the "SIM card is full," this most likely this means that the SIM card has reached its maximum storage capacity. A user needs to delete contacts and text messages or upgrade to a larger SIM car... More »

CD-ROM stands for Compact Disc Read-Only Memory. A CD-ROM, also referred to as a compact disc, is read by a computer with an optical drive. More »

To register or update your T-Mobile SIM card, log in to the SIM page of the T-Mobile website, enter your new SIM card number, and follow the instructions on the page. This process takes just a few minutes. More »