The European Telecommunications Standards Institute (ETSI) announced on Friday a new standardized SIM format for mobile devices. The new nano-SIM cards will be 40% smaller than the current smallest ...

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.

Find out how to trim your own micro-SIM card for use in phones that require this new format. Sharon Profis Former Vice President of Content, CNET Studios As vice president of CNET Studios, Sharon led ...

There are few devices that better exemplify the breakneck pace of modern technical advancement than the mobile phone. In the span of just a decade, we went from flip phones and polyphonic ringtones to ...

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 ...