A SIM card, or subscriber identity module, is a small card in your cellphone that lets you place phone calls, send text messages, and more.

AT&T CEO Ralph de la Vega said in an interview this week that a smaller SIM card is a "no-brainer" and his company is looking into it, but declined to make the direct connection to Apple that the ...

These two ways of connecting your phone to a cellular network are very different. We tell you about each and how you can switch from one to another.

On April 29, SK Telecom announced that it would implement a "SIM format" method, which changes the SIM card software, to achieve the same effect as physically replacing the SIM card without actually ...

A SIM card, or subscriber identity module card, is essential component of any phone. It connects your device to a cellular network and stores vital information, including your phone number. Many ...

NM Cards are the exact size and shape of a Nano SIM card and go in one of the dual-SIM slots NM Cards are the exact size and shape of a Nano SIM card and go in one of the dual-SIM slots ...

With smartphones, where Apple leads others often follow - so it launching an iPhone this week without a traditional Sim card is raising questions over the future of a very familiar piece of phone tech ...

With smartphones, where Apple leads others often follow - so it launching an iPhone this week without a traditional SIM card is raising questions over the future of a very familiar piece of phone tech ...